package org.hl7.fhir.r4.model;

/*
  Copyright (c) 2011+, HL7, Inc.
  All rights reserved.
  
  Redistribution and use in source and binary forms, with or without modification, 
  are permitted provided that the following conditions are met:
  
   * Redistributions of source code must retain the above copyright notice, this 
     list of conditions and the following disclaimer.
   * Redistributions in binary form must reproduce the above copyright notice, 
     this list of conditions and the following disclaimer in the documentation 
     and/or other materials provided with the distribution.
   * Neither the name of HL7 nor the names of its contributors may be used to 
     endorse or promote products derived from this software without specific 
     prior written permission.
  
  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 
  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 
  IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 
  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
  POSSIBILITY OF SUCH DAMAGE.
  
*/

// Generated on Thu, Sep 13, 2018 09:04-0400 for FHIR v3.5.0

import java.util.*;

import java.math.*;
import org.hl7.fhir.utilities.Utilities;
import ca.uhn.fhir.model.api.annotation.ResourceDef;
import ca.uhn.fhir.model.api.annotation.SearchParamDefinition;
import ca.uhn.fhir.model.api.annotation.Child;
import ca.uhn.fhir.model.api.annotation.ChildOrder;
import ca.uhn.fhir.model.api.annotation.Description;
import ca.uhn.fhir.model.api.annotation.Block;
import org.hl7.fhir.instance.model.api.*;
import org.hl7.fhir.exceptions.FHIRException;
/**
 * An authorization for the supply of glasses and/or contact lenses to a patient.
 */
@ResourceDef(name="VisionPrescription", profile="http://hl7.org/fhir/StructureDefinition/VisionPrescription")
public class VisionPrescription extends DomainResource {

    public enum VisionStatus {
        /**
         * The instance is currently in-force.
         */
        ACTIVE, 
        /**
         * The instance is withdrawn, rescinded or reversed.
         */
        CANCELLED, 
        /**
         * A new instance the contents of which is not complete.
         */
        DRAFT, 
        /**
         * The instance was entered in error.
         */
        ENTEREDINERROR, 
        /**
         * added to help the parsers with the generic types
         */
        NULL;
        public static VisionStatus fromCode(String codeString) throws FHIRException {
            if (codeString == null || "".equals(codeString))
                return null;
        if ("active".equals(codeString))
          return ACTIVE;
        if ("cancelled".equals(codeString))
          return CANCELLED;
        if ("draft".equals(codeString))
          return DRAFT;
        if ("entered-in-error".equals(codeString))
          return ENTEREDINERROR;
        if (Configuration.isAcceptInvalidEnums())
          return null;
        else
          throw new FHIRException("Unknown VisionStatus code '"+codeString+"'");
        }
        public String toCode() {
          switch (this) {
            case ACTIVE: return "active";
            case CANCELLED: return "cancelled";
            case DRAFT: return "draft";
            case ENTEREDINERROR: return "entered-in-error";
            default: return "?";
          }
        }
        public String getSystem() {
          switch (this) {
            case ACTIVE: return "http://hl7.org/fhir/fm-status";
            case CANCELLED: return "http://hl7.org/fhir/fm-status";
            case DRAFT: return "http://hl7.org/fhir/fm-status";
            case ENTEREDINERROR: return "http://hl7.org/fhir/fm-status";
            default: return "?";
          }
        }
        public String getDefinition() {
          switch (this) {
            case ACTIVE: return "The instance is currently in-force.";
            case CANCELLED: return "The instance is withdrawn, rescinded or reversed.";
            case DRAFT: return "A new instance the contents of which is not complete.";
            case ENTEREDINERROR: return "The instance was entered in error.";
            default: return "?";
          }
        }
        public String getDisplay() {
          switch (this) {
            case ACTIVE: return "Active";
            case CANCELLED: return "Cancelled";
            case DRAFT: return "Draft";
            case ENTEREDINERROR: return "Entered in Error";
            default: return "?";
          }
        }
    }

  public static class VisionStatusEnumFactory implements EnumFactory<VisionStatus> {
    public VisionStatus fromCode(String codeString) throws IllegalArgumentException {
      if (codeString == null || "".equals(codeString))
            if (codeString == null || "".equals(codeString))
                return null;
        if ("active".equals(codeString))
          return VisionStatus.ACTIVE;
        if ("cancelled".equals(codeString))
          return VisionStatus.CANCELLED;
        if ("draft".equals(codeString))
          return VisionStatus.DRAFT;
        if ("entered-in-error".equals(codeString))
          return VisionStatus.ENTEREDINERROR;
        throw new IllegalArgumentException("Unknown VisionStatus code '"+codeString+"'");
        }
        public Enumeration<VisionStatus> fromType(Base code) throws FHIRException {
          if (code == null)
            return null;
          if (code.isEmpty())
            return new Enumeration<VisionStatus>(this);
          String codeString = ((PrimitiveType) code).asStringValue();
          if (codeString == null || "".equals(codeString))
            return null;
        if ("active".equals(codeString))
          return new Enumeration<VisionStatus>(this, VisionStatus.ACTIVE);
        if ("cancelled".equals(codeString))
          return new Enumeration<VisionStatus>(this, VisionStatus.CANCELLED);
        if ("draft".equals(codeString))
          return new Enumeration<VisionStatus>(this, VisionStatus.DRAFT);
        if ("entered-in-error".equals(codeString))
          return new Enumeration<VisionStatus>(this, VisionStatus.ENTEREDINERROR);
        throw new FHIRException("Unknown VisionStatus code '"+codeString+"'");
        }
    public String toCode(VisionStatus code) {
      if (code == VisionStatus.ACTIVE)
        return "active";
      if (code == VisionStatus.CANCELLED)
        return "cancelled";
      if (code == VisionStatus.DRAFT)
        return "draft";
      if (code == VisionStatus.ENTEREDINERROR)
        return "entered-in-error";
      return "?";
      }
    public String toSystem(VisionStatus code) {
      return code.getSystem();
      }
    }

    public enum VisionEyes {
        /**
         * Right Eye.
         */
        RIGHT, 
        /**
         * Left Eye.
         */
        LEFT, 
        /**
         * added to help the parsers with the generic types
         */
        NULL;
        public static VisionEyes fromCode(String codeString) throws FHIRException {
            if (codeString == null || "".equals(codeString))
                return null;
        if ("right".equals(codeString))
          return RIGHT;
        if ("left".equals(codeString))
          return LEFT;
        if (Configuration.isAcceptInvalidEnums())
          return null;
        else
          throw new FHIRException("Unknown VisionEyes code '"+codeString+"'");
        }
        public String toCode() {
          switch (this) {
            case RIGHT: return "right";
            case LEFT: return "left";
            default: return "?";
          }
        }
        public String getSystem() {
          switch (this) {
            case RIGHT: return "http://hl7.org/fhir/vision-eye-codes";
            case LEFT: return "http://hl7.org/fhir/vision-eye-codes";
            default: return "?";
          }
        }
        public String getDefinition() {
          switch (this) {
            case RIGHT: return "Right Eye.";
            case LEFT: return "Left Eye.";
            default: return "?";
          }
        }
        public String getDisplay() {
          switch (this) {
            case RIGHT: return "Right Eye";
            case LEFT: return "Left Eye";
            default: return "?";
          }
        }
    }

  public static class VisionEyesEnumFactory implements EnumFactory<VisionEyes> {
    public VisionEyes fromCode(String codeString) throws IllegalArgumentException {
      if (codeString == null || "".equals(codeString))
            if (codeString == null || "".equals(codeString))
                return null;
        if ("right".equals(codeString))
          return VisionEyes.RIGHT;
        if ("left".equals(codeString))
          return VisionEyes.LEFT;
        throw new IllegalArgumentException("Unknown VisionEyes code '"+codeString+"'");
        }
        public Enumeration<VisionEyes> fromType(Base code) throws FHIRException {
          if (code == null)
            return null;
          if (code.isEmpty())
            return new Enumeration<VisionEyes>(this);
          String codeString = ((PrimitiveType) code).asStringValue();
          if (codeString == null || "".equals(codeString))
            return null;
        if ("right".equals(codeString))
          return new Enumeration<VisionEyes>(this, VisionEyes.RIGHT);
        if ("left".equals(codeString))
          return new Enumeration<VisionEyes>(this, VisionEyes.LEFT);
        throw new FHIRException("Unknown VisionEyes code '"+codeString+"'");
        }
    public String toCode(VisionEyes code) {
      if (code == VisionEyes.RIGHT)
        return "right";
      if (code == VisionEyes.LEFT)
        return "left";
      return "?";
      }
    public String toSystem(VisionEyes code) {
      return code.getSystem();
      }
    }

    public enum VisionBase {
        /**
         * top.
         */
        UP, 
        /**
         * bottom.
         */
        DOWN, 
        /**
         * inner edge.
         */
        IN, 
        /**
         * outer edge.
         */
        OUT, 
        /**
         * added to help the parsers with the generic types
         */
        NULL;
        public static VisionBase fromCode(String codeString) throws FHIRException {
            if (codeString == null || "".equals(codeString))
                return null;
        if ("up".equals(codeString))
          return UP;
        if ("down".equals(codeString))
          return DOWN;
        if ("in".equals(codeString))
          return IN;
        if ("out".equals(codeString))
          return OUT;
        if (Configuration.isAcceptInvalidEnums())
          return null;
        else
          throw new FHIRException("Unknown VisionBase code '"+codeString+"'");
        }
        public String toCode() {
          switch (this) {
            case UP: return "up";
            case DOWN: return "down";
            case IN: return "in";
            case OUT: return "out";
            default: return "?";
          }
        }
        public String getSystem() {
          switch (this) {
            case UP: return "http://hl7.org/fhir/vision-base-codes";
            case DOWN: return "http://hl7.org/fhir/vision-base-codes";
            case IN: return "http://hl7.org/fhir/vision-base-codes";
            case OUT: return "http://hl7.org/fhir/vision-base-codes";
            default: return "?";
          }
        }
        public String getDefinition() {
          switch (this) {
            case UP: return "top.";
            case DOWN: return "bottom.";
            case IN: return "inner edge.";
            case OUT: return "outer edge.";
            default: return "?";
          }
        }
        public String getDisplay() {
          switch (this) {
            case UP: return "Up";
            case DOWN: return "Down";
            case IN: return "In";
            case OUT: return "Out";
            default: return "?";
          }
        }
    }

  public static class VisionBaseEnumFactory implements EnumFactory<VisionBase> {
    public VisionBase fromCode(String codeString) throws IllegalArgumentException {
      if (codeString == null || "".equals(codeString))
            if (codeString == null || "".equals(codeString))
                return null;
        if ("up".equals(codeString))
          return VisionBase.UP;
        if ("down".equals(codeString))
          return VisionBase.DOWN;
        if ("in".equals(codeString))
          return VisionBase.IN;
        if ("out".equals(codeString))
          return VisionBase.OUT;
        throw new IllegalArgumentException("Unknown VisionBase code '"+codeString+"'");
        }
        public Enumeration<VisionBase> fromType(Base code) throws FHIRException {
          if (code == null)
            return null;
          if (code.isEmpty())
            return new Enumeration<VisionBase>(this);
          String codeString = ((PrimitiveType) code).asStringValue();
          if (codeString == null || "".equals(codeString))
            return null;
        if ("up".equals(codeString))
          return new Enumeration<VisionBase>(this, VisionBase.UP);
        if ("down".equals(codeString))
          return new Enumeration<VisionBase>(this, VisionBase.DOWN);
        if ("in".equals(codeString))
          return new Enumeration<VisionBase>(this, VisionBase.IN);
        if ("out".equals(codeString))
          return new Enumeration<VisionBase>(this, VisionBase.OUT);
        throw new FHIRException("Unknown VisionBase code '"+codeString+"'");
        }
    public String toCode(VisionBase code) {
      if (code == VisionBase.UP)
        return "up";
      if (code == VisionBase.DOWN)
        return "down";
      if (code == VisionBase.IN)
        return "in";
      if (code == VisionBase.OUT)
        return "out";
      return "?";
      }
    public String toSystem(VisionBase code) {
      return code.getSystem();
      }
    }

    @Block()
    public static class VisionPrescriptionDispenseComponent extends BackboneElement implements IBaseBackboneElement {
        /**
         * Identifies the type of vision correction product which is required for the patient.
         */
        @Child(name = "product", type = {CodeableConcept.class}, order=1, min=0, max=1, modifier=false, summary=false)
        @Description(shortDefinition="Product to be supplied", formalDefinition="Identifies the type of vision correction product which is required for the patient." )
        @ca.uhn.fhir.model.api.annotation.Binding(valueSet="http://hl7.org/fhir/ValueSet/vision-product")
        protected CodeableConcept product;

        /**
         * The eye for which the lens applies.
         */
        @Child(name = "eye", type = {CodeType.class}, order=2, min=0, max=1, modifier=false, summary=false)
        @Description(shortDefinition="right | left", formalDefinition="The eye for which the lens applies." )
        @ca.uhn.fhir.model.api.annotation.Binding(valueSet="http://hl7.org/fhir/ValueSet/vision-eye-codes")
        protected Enumeration<VisionEyes> eye;

        /**
         * Lens power measured in dioptres (0.25 units).
         */
        @Child(name = "sphere", type = {DecimalType.class}, order=3, min=0, max=1, modifier=false, summary=false)
        @Description(shortDefinition="Lens sphere", formalDefinition="Lens power measured in dioptres (0.25 units)." )
        protected DecimalType sphere;

        /**
         * Power adjustment for astigmatism measured in dioptres (0.25 units).
         */
        @Child(name = "cylinder", type = {DecimalType.class}, order=4, min=0, max=1, modifier=false, summary=false)
        @Description(shortDefinition="Lens cylinder", formalDefinition="Power adjustment for astigmatism measured in dioptres (0.25 units)." )
        protected DecimalType cylinder;

        /**
         * Adjustment for astigmatism measured in integer degrees.
         */
        @Child(name = "axis", type = {IntegerType.class}, order=5, min=0, max=1, modifier=false, summary=false)
        @Description(shortDefinition="Lens axis", formalDefinition="Adjustment for astigmatism measured in integer degrees." )
        protected IntegerType axis;

        /**
         * Allows for adjustment on two axis.
         */
        @Child(name = "prism", type = {}, order=6, min=0, max=Child.MAX_UNLIMITED, modifier=false, summary=false)
        @Description(shortDefinition="Lens prism", formalDefinition="Allows for adjustment on two axis." )
        protected List<PrismComponent> prism;

        /**
         * Power adjustment for multifocal lenses measured in dioptres (0.25 units).
         */
        @Child(name = "add", type = {DecimalType.class}, order=7, min=0, max=1, modifier=false, summary=false)
        @Description(shortDefinition="Lens add", formalDefinition="Power adjustment for multifocal lenses measured in dioptres (0.25 units)." )
        protected DecimalType add;

        /**
         * Contact lens power measured in dioptres (0.25 units).
         */
        @Child(name = "power", type = {DecimalType.class}, order=8, min=0, max=1, modifier=false, summary=false)
        @Description(shortDefinition="Contact lens power", formalDefinition="Contact lens power measured in dioptres (0.25 units)." )
        protected DecimalType power;

        /**
         * Back curvature measured in millimetres.
         */
        @Child(name = "backCurve", type = {DecimalType.class}, order=9, min=0, max=1, modifier=false, summary=false)
        @Description(shortDefinition="Contact lens back curvature", formalDefinition="Back curvature measured in millimetres." )
        protected DecimalType backCurve;

        /**
         * Contact lens diameter measured in millimetres.
         */
        @Child(name = "diameter", type = {DecimalType.class}, order=10, min=0, max=1, modifier=false, summary=false)
        @Description(shortDefinition="Contact lens diameter", formalDefinition="Contact lens diameter measured in millimetres." )
        protected DecimalType diameter;

        /**
         * The recommended maximum wear period for the lens.
         */
        @Child(name = "duration", type = {Quantity.class}, order=11, min=0, max=1, modifier=false, summary=false)
        @Description(shortDefinition="Lens wear duration", formalDefinition="The recommended maximum wear period for the lens." )
        protected Quantity duration;

        /**
         * Special color or pattern.
         */
        @Child(name = "color", type = {StringType.class}, order=12, min=0, max=1, modifier=false, summary=false)
        @Description(shortDefinition="Color required", formalDefinition="Special color or pattern." )
        protected StringType color;

        /**
         * Brand recommendations or restrictions.
         */
        @Child(name = "brand", type = {StringType.class}, order=13, min=0, max=1, modifier=false, summary=false)
        @Description(shortDefinition="Brand required", formalDefinition="Brand recommendations or restrictions." )
        protected StringType brand;

        /**
         * Notes for special requirements such as coatings and lens materials.
         */
        @Child(name = "note", type = {Annotation.class}, order=14, min=0, max=Child.MAX_UNLIMITED, modifier=false, summary=false)
        @Description(shortDefinition="Notes for coatings", formalDefinition="Notes for special requirements such as coatings and lens materials." )
        protected List<Annotation> note;

        private static final long serialVersionUID = 688924460L;

    /**
     * Constructor
     */
      public VisionPrescriptionDispenseComponent() {
        super();
      }

        /**
         * @return {@link #product} (Identifies the type of vision correction product which is required for the patient.)
         */
        public CodeableConcept getProduct() { 
          if (this.product == null)
            if (Configuration.errorOnAutoCreate())
              throw new Error("Attempt to auto-create VisionPrescriptionDispenseComponent.product");
            else if (Configuration.doAutoCreate())
              this.product = new CodeableConcept(); // cc
          return this.product;
        }

        public boolean hasProduct() { 
          return this.product != null && !this.product.isEmpty();
        }

        /**
         * @param value {@link #product} (Identifies the type of vision correction product which is required for the patient.)
         */
        public VisionPrescriptionDispenseComponent setProduct(CodeableConcept value) { 
          this.product = value;
          return this;
        }

        /**
         * @return {@link #eye} (The eye for which the lens applies.). This is the underlying object with id, value and extensions. The accessor "getEye" gives direct access to the value
         */
        public Enumeration<VisionEyes> getEyeElement() { 
          if (this.eye == null)
            if (Configuration.errorOnAutoCreate())
              throw new Error("Attempt to auto-create VisionPrescriptionDispenseComponent.eye");
            else if (Configuration.doAutoCreate())
              this.eye = new Enumeration<VisionEyes>(new VisionEyesEnumFactory()); // bb
          return this.eye;
        }

        public boolean hasEyeElement() { 
          return this.eye != null && !this.eye.isEmpty();
        }

        public boolean hasEye() { 
          return this.eye != null && !this.eye.isEmpty();
        }

        /**
         * @param value {@link #eye} (The eye for which the lens applies.). This is the underlying object with id, value and extensions. The accessor "getEye" gives direct access to the value
         */
        public VisionPrescriptionDispenseComponent setEyeElement(Enumeration<VisionEyes> value) { 
          this.eye = value;
          return this;
        }

        /**
         * @return The eye for which the lens applies.
         */
        public VisionEyes getEye() { 
          return this.eye == null ? null : this.eye.getValue();
        }

        /**
         * @param value The eye for which the lens applies.
         */
        public VisionPrescriptionDispenseComponent setEye(VisionEyes value) { 
          if (value == null)
            this.eye = null;
          else {
            if (this.eye == null)
              this.eye = new Enumeration<VisionEyes>(new VisionEyesEnumFactory());
            this.eye.setValue(value);
          }
          return this;
        }

        /**
         * @return {@link #sphere} (Lens power measured in dioptres (0.25 units).). This is the underlying object with id, value and extensions. The accessor "getSphere" gives direct access to the value
         */
        public DecimalType getSphereElement() { 
          if (this.sphere == null)
            if (Configuration.errorOnAutoCreate())
              throw new Error("Attempt to auto-create VisionPrescriptionDispenseComponent.sphere");
            else if (Configuration.doAutoCreate())
              this.sphere = new DecimalType(); // bb
          return this.sphere;
        }

        public boolean hasSphereElement() { 
          return this.sphere != null && !this.sphere.isEmpty();
        }

        public boolean hasSphere() { 
          return this.sphere != null && !this.sphere.isEmpty();
        }

        /**
         * @param value {@link #sphere} (Lens power measured in dioptres (0.25 units).). This is the underlying object with id, value and extensions. The accessor "getSphere" gives direct access to the value
         */
        public VisionPrescriptionDispenseComponent setSphereElement(DecimalType value) { 
          this.sphere = value;
          return this;
        }

        /**
         * @return Lens power measured in dioptres (0.25 units).
         */
        public BigDecimal getSphere() { 
          return this.sphere == null ? null : this.sphere.getValue();
        }

        /**
         * @param value Lens power measured in dioptres (0.25 units).
         */
        public VisionPrescriptionDispenseComponent setSphere(BigDecimal value) { 
          if (value == null)
            this.sphere = null;
          else {
            if (this.sphere == null)
              this.sphere = new DecimalType();
            this.sphere.setValue(value);
          }
          return this;
        }

        /**
         * @param value Lens power measured in dioptres (0.25 units).
         */
        public VisionPrescriptionDispenseComponent setSphere(long value) { 
              this.sphere = new DecimalType();
            this.sphere.setValue(value);
          return this;
        }

        /**
         * @param value Lens power measured in dioptres (0.25 units).
         */
        public VisionPrescriptionDispenseComponent setSphere(double value) { 
              this.sphere = new DecimalType();
            this.sphere.setValue(value);
          return this;
        }

        /**
         * @return {@link #cylinder} (Power adjustment for astigmatism measured in dioptres (0.25 units).). This is the underlying object with id, value and extensions. The accessor "getCylinder" gives direct access to the value
         */
        public DecimalType getCylinderElement() { 
          if (this.cylinder == null)
            if (Configuration.errorOnAutoCreate())
              throw new Error("Attempt to auto-create VisionPrescriptionDispenseComponent.cylinder");
            else if (Configuration.doAutoCreate())
              this.cylinder = new DecimalType(); // bb
          return this.cylinder;
        }

        public boolean hasCylinderElement() { 
          return this.cylinder != null && !this.cylinder.isEmpty();
        }

        public boolean hasCylinder() { 
          return this.cylinder != null && !this.cylinder.isEmpty();
        }

        /**
         * @param value {@link #cylinder} (Power adjustment for astigmatism measured in dioptres (0.25 units).). This is the underlying object with id, value and extensions. The accessor "getCylinder" gives direct access to the value
         */
        public VisionPrescriptionDispenseComponent setCylinderElement(DecimalType value) { 
          this.cylinder = value;
          return this;
        }

        /**
         * @return Power adjustment for astigmatism measured in dioptres (0.25 units).
         */
        public BigDecimal getCylinder() { 
          return this.cylinder == null ? null : this.cylinder.getValue();
        }

        /**
         * @param value Power adjustment for astigmatism measured in dioptres (0.25 units).
         */
        public VisionPrescriptionDispenseComponent setCylinder(BigDecimal value) { 
          if (value == null)
            this.cylinder = null;
          else {
            if (this.cylinder == null)
              this.cylinder = new DecimalType();
            this.cylinder.setValue(value);
          }
          return this;
        }

        /**
         * @param value Power adjustment for astigmatism measured in dioptres (0.25 units).
         */
        public VisionPrescriptionDispenseComponent setCylinder(long value) { 
              this.cylinder = new DecimalType();
            this.cylinder.setValue(value);
          return this;
        }

        /**
         * @param value Power adjustment for astigmatism measured in dioptres (0.25 units).
         */
        public VisionPrescriptionDispenseComponent setCylinder(double value) { 
              this.cylinder = new DecimalType();
            this.cylinder.setValue(value);
          return this;
        }

        /**
         * @return {@link #axis} (Adjustment for astigmatism measured in integer degrees.). This is the underlying object with id, value and extensions. The accessor "getAxis" gives direct access to the value
         */
        public IntegerType getAxisElement() { 
          if (this.axis == null)
            if (Configuration.errorOnAutoCreate())
              throw new Error("Attempt to auto-create VisionPrescriptionDispenseComponent.axis");
            else if (Configuration.doAutoCreate())
              this.axis = new IntegerType(); // bb
          return this.axis;
        }

        public boolean hasAxisElement() { 
          return this.axis != null && !this.axis.isEmpty();
        }

        public boolean hasAxis() { 
          return this.axis != null && !this.axis.isEmpty();
        }

        /**
         * @param value {@link #axis} (Adjustment for astigmatism measured in integer degrees.). This is the underlying object with id, value and extensions. The accessor "getAxis" gives direct access to the value
         */
        public VisionPrescriptionDispenseComponent setAxisElement(IntegerType value) { 
          this.axis = value;
          return this;
        }

        /**
         * @return Adjustment for astigmatism measured in integer degrees.
         */
        public int getAxis() { 
          return this.axis == null || this.axis.isEmpty() ? 0 : this.axis.getValue();
        }

        /**
         * @param value Adjustment for astigmatism measured in integer degrees.
         */
        public VisionPrescriptionDispenseComponent setAxis(int value) { 
            if (this.axis == null)
              this.axis = new IntegerType();
            this.axis.setValue(value);
          return this;
        }

        /**
         * @return {@link #prism} (Allows for adjustment on two axis.)
         */
        public List<PrismComponent> getPrism() { 
          if (this.prism == null)
            this.prism = new ArrayList<PrismComponent>();
          return this.prism;
        }

        /**
         * @return Returns a reference to <code>this</code> for easy method chaining
         */
        public VisionPrescriptionDispenseComponent setPrism(List<PrismComponent> thePrism) { 
          this.prism = thePrism;
          return this;
        }

        public boolean hasPrism() { 
          if (this.prism == null)
            return false;
          for (PrismComponent item : this.prism)
            if (!item.isEmpty())
              return true;
          return false;
        }

        public PrismComponent addPrism() { //3
          PrismComponent t = new PrismComponent();
          if (this.prism == null)
            this.prism = new ArrayList<PrismComponent>();
          this.prism.add(t);
          return t;
        }

        public VisionPrescriptionDispenseComponent addPrism(PrismComponent t) { //3
          if (t == null)
            return this;
          if (this.prism == null)
            this.prism = new ArrayList<PrismComponent>();
          this.prism.add(t);
          return this;
        }

        /**
         * @return The first repetition of repeating field {@link #prism}, creating it if it does not already exist
         */
        public PrismComponent getPrismFirstRep() { 
          if (getPrism().isEmpty()) {
            addPrism();
          }
          return getPrism().get(0);
        }

        /**
         * @return {@link #add} (Power adjustment for multifocal lenses measured in dioptres (0.25 units).). This is the underlying object with id, value and extensions. The accessor "getAdd" gives direct access to the value
         */
        public DecimalType getAddElement() { 
          if (this.add == null)
            if (Configuration.errorOnAutoCreate())
              throw new Error("Attempt to auto-create VisionPrescriptionDispenseComponent.add");
            else if (Configuration.doAutoCreate())
              this.add = new DecimalType(); // bb
          return this.add;
        }

        public boolean hasAddElement() { 
          return this.add != null && !this.add.isEmpty();
        }

        public boolean hasAdd() { 
          return this.add != null && !this.add.isEmpty();
        }

        /**
         * @param value {@link #add} (Power adjustment for multifocal lenses measured in dioptres (0.25 units).). This is the underlying object with id, value and extensions. The accessor "getAdd" gives direct access to the value
         */
        public VisionPrescriptionDispenseComponent setAddElement(DecimalType value) { 
          this.add = value;
          return this;
        }

        /**
         * @return Power adjustment for multifocal lenses measured in dioptres (0.25 units).
         */
        public BigDecimal getAdd() { 
          return this.add == null ? null : this.add.getValue();
        }

        /**
         * @param value Power adjustment for multifocal lenses measured in dioptres (0.25 units).
         */
        public VisionPrescriptionDispenseComponent setAdd(BigDecimal value) { 
          if (value == null)
            this.add = null;
          else {
            if (this.add == null)
              this.add = new DecimalType();
            this.add.setValue(value);
          }
          return this;
        }

        /**
         * @param value Power adjustment for multifocal lenses measured in dioptres (0.25 units).
         */
        public VisionPrescriptionDispenseComponent setAdd(long value) { 
              this.add = new DecimalType();
            this.add.setValue(value);
          return this;
        }

        /**
         * @param value Power adjustment for multifocal lenses measured in dioptres (0.25 units).
         */
        public VisionPrescriptionDispenseComponent setAdd(double value) { 
              this.add = new DecimalType();
            this.add.setValue(value);
          return this;
        }

        /**
         * @return {@link #power} (Contact lens power measured in dioptres (0.25 units).). This is the underlying object with id, value and extensions. The accessor "getPower" gives direct access to the value
         */
        public DecimalType getPowerElement() { 
          if (this.power == null)
            if (Configuration.errorOnAutoCreate())
              throw new Error("Attempt to auto-create VisionPrescriptionDispenseComponent.power");
            else if (Configuration.doAutoCreate())
              this.power = new DecimalType(); // bb
          return this.power;
        }

        public boolean hasPowerElement() { 
          return this.power != null && !this.power.isEmpty();
        }

        public boolean hasPower() { 
          return this.power != null && !this.power.isEmpty();
        }

        /**
         * @param value {@link #power} (Contact lens power measured in dioptres (0.25 units).). This is the underlying object with id, value and extensions. The accessor "getPower" gives direct access to the value
         */
        public VisionPrescriptionDispenseComponent setPowerElement(DecimalType value) { 
          this.power = value;
          return this;
        }

        /**
         * @return Contact lens power measured in dioptres (0.25 units).
         */
        public BigDecimal getPower() { 
          return this.power == null ? null : this.power.getValue();
        }

        /**
         * @param value Contact lens power measured in dioptres (0.25 units).
         */
        public VisionPrescriptionDispenseComponent setPower(BigDecimal value) { 
          if (value == null)
            this.power = null;
          else {
            if (this.power == null)
              this.power = new DecimalType();
            this.power.setValue(value);
          }
          return this;
        }

        /**
         * @param value Contact lens power measured in dioptres (0.25 units).
         */
        public VisionPrescriptionDispenseComponent setPower(long value) { 
              this.power = new DecimalType();
            this.power.setValue(value);
          return this;
        }

        /**
         * @param value Contact lens power measured in dioptres (0.25 units).
         */
        public VisionPrescriptionDispenseComponent setPower(double value) { 
              this.power = new DecimalType();
            this.power.setValue(value);
          return this;
        }

        /**
         * @return {@link #backCurve} (Back curvature measured in millimetres.). This is the underlying object with id, value and extensions. The accessor "getBackCurve" gives direct access to the value
         */
        public DecimalType getBackCurveElement() { 
          if (this.backCurve == null)
            if (Configuration.errorOnAutoCreate())
              throw new Error("Attempt to auto-create VisionPrescriptionDispenseComponent.backCurve");
            else if (Configuration.doAutoCreate())
              this.backCurve = new DecimalType(); // bb
          return this.backCurve;
        }

        public boolean hasBackCurveElement() { 
          return this.backCurve != null && !this.backCurve.isEmpty();
        }

        public boolean hasBackCurve() { 
          return this.backCurve != null && !this.backCurve.isEmpty();
        }

        /**
         * @param value {@link #backCurve} (Back curvature measured in millimetres.). This is the underlying object with id, value and extensions. The accessor "getBackCurve" gives direct access to the value
         */
        public VisionPrescriptionDispenseComponent setBackCurveElement(DecimalType value) { 
          this.backCurve = value;
          return this;
        }

        /**
         * @return Back curvature measured in millimetres.
         */
        public BigDecimal getBackCurve() { 
          return this.backCurve == null ? null : this.backCurve.getValue();
        }

        /**
         * @param value Back curvature measured in millimetres.
         */
        public VisionPrescriptionDispenseComponent setBackCurve(BigDecimal value) { 
          if (value == null)
            this.backCurve = null;
          else {
            if (this.backCurve == null)
              this.backCurve = new DecimalType();
            this.backCurve.setValue(value);
          }
          return this;
        }

        /**
         * @param value Back curvature measured in millimetres.
         */
        public VisionPrescriptionDispenseComponent setBackCurve(long value) { 
              this.backCurve = new DecimalType();
            this.backCurve.setValue(value);
          return this;
        }

        /**
         * @param value Back curvature measured in millimetres.
         */
        public VisionPrescriptionDispenseComponent setBackCurve(double value) { 
              this.backCurve = new DecimalType();
            this.backCurve.setValue(value);
          return this;
        }

        /**
         * @return {@link #diameter} (Contact lens diameter measured in millimetres.). This is the underlying object with id, value and extensions. The accessor "getDiameter" gives direct access to the value
         */
        public DecimalType getDiameterElement() { 
          if (this.diameter == null)
            if (Configuration.errorOnAutoCreate())
              throw new Error("Attempt to auto-create VisionPrescriptionDispenseComponent.diameter");
            else if (Configuration.doAutoCreate())
              this.diameter = new DecimalType(); // bb
          return this.diameter;
        }

        public boolean hasDiameterElement() { 
          return this.diameter != null && !this.diameter.isEmpty();
        }

        public boolean hasDiameter() { 
          return this.diameter != null && !this.diameter.isEmpty();
        }

        /**
         * @param value {@link #diameter} (Contact lens diameter measured in millimetres.). This is the underlying object with id, value and extensions. The accessor "getDiameter" gives direct access to the value
         */
        public VisionPrescriptionDispenseComponent setDiameterElement(DecimalType value) { 
          this.diameter = value;
          return this;
        }

        /**
         * @return Contact lens diameter measured in millimetres.
         */
        public BigDecimal getDiameter() { 
          return this.diameter == null ? null : this.diameter.getValue();
        }

        /**
         * @param value Contact lens diameter measured in millimetres.
         */
        public VisionPrescriptionDispenseComponent setDiameter(BigDecimal value) { 
          if (value == null)
            this.diameter = null;
          else {
            if (this.diameter == null)
              this.diameter = new DecimalType();
            this.diameter.setValue(value);
          }
          return this;
        }

        /**
         * @param value Contact lens diameter measured in millimetres.
         */
        public VisionPrescriptionDispenseComponent setDiameter(long value) { 
              this.diameter = new DecimalType();
            this.diameter.setValue(value);
          return this;
        }

        /**
         * @param value Contact lens diameter measured in millimetres.
         */
        public VisionPrescriptionDispenseComponent setDiameter(double value) { 
              this.diameter = new DecimalType();
            this.diameter.setValue(value);
          return this;
        }

        /**
         * @return {@link #duration} (The recommended maximum wear period for the lens.)
         */
        public Quantity getDuration() { 
          if (this.duration == null)
            if (Configuration.errorOnAutoCreate())
              throw new Error("Attempt to auto-create VisionPrescriptionDispenseComponent.duration");
            else if (Configuration.doAutoCreate())
              this.duration = new Quantity(); // cc
          return this.duration;
        }

        public boolean hasDuration() { 
          return this.duration != null && !this.duration.isEmpty();
        }

        /**
         * @param value {@link #duration} (The recommended maximum wear period for the lens.)
         */
        public VisionPrescriptionDispenseComponent setDuration(Quantity value) { 
          this.duration = value;
          return this;
        }

        /**
         * @return {@link #color} (Special color or pattern.). This is the underlying object with id, value and extensions. The accessor "getColor" gives direct access to the value
         */
        public StringType getColorElement() { 
          if (this.color == null)
            if (Configuration.errorOnAutoCreate())
              throw new Error("Attempt to auto-create VisionPrescriptionDispenseComponent.color");
            else if (Configuration.doAutoCreate())
              this.color = new StringType(); // bb
          return this.color;
        }

        public boolean hasColorElement() { 
          return this.color != null && !this.color.isEmpty();
        }

        public boolean hasColor() { 
          return this.color != null && !this.color.isEmpty();
        }

        /**
         * @param value {@link #color} (Special color or pattern.). This is the underlying object with id, value and extensions. The accessor "getColor" gives direct access to the value
         */
        public VisionPrescriptionDispenseComponent setColorElement(StringType value) { 
          this.color = value;
          return this;
        }

        /**
         * @return Special color or pattern.
         */
        public String getColor() { 
          return this.color == null ? null : this.color.getValue();
        }

        /**
         * @param value Special color or pattern.
         */
        public VisionPrescriptionDispenseComponent setColor(String value) { 
          if (Utilities.noString(value))
            this.color = null;
          else {
            if (this.color == null)
              this.color = new StringType();
            this.color.setValue(value);
          }
          return this;
        }

        /**
         * @return {@link #brand} (Brand recommendations or restrictions.). This is the underlying object with id, value and extensions. The accessor "getBrand" gives direct access to the value
         */
        public StringType getBrandElement() { 
          if (this.brand == null)
            if (Configuration.errorOnAutoCreate())
              throw new Error("Attempt to auto-create VisionPrescriptionDispenseComponent.brand");
            else if (Configuration.doAutoCreate())
              this.brand = new StringType(); // bb
          return this.brand;
        }

        public boolean hasBrandElement() { 
          return this.brand != null && !this.brand.isEmpty();
        }

        public boolean hasBrand() { 
          return this.brand != null && !this.brand.isEmpty();
        }

        /**
         * @param value {@link #brand} (Brand recommendations or restrictions.). This is the underlying object with id, value and extensions. The accessor "getBrand" gives direct access to the value
         */
        public VisionPrescriptionDispenseComponent setBrandElement(StringType value) { 
          this.brand = value;
          return this;
        }

        /**
         * @return Brand recommendations or restrictions.
         */
        public String getBrand() { 
          return this.brand == null ? null : this.brand.getValue();
        }

        /**
         * @param value Brand recommendations or restrictions.
         */
        public VisionPrescriptionDispenseComponent setBrand(String value) { 
          if (Utilities.noString(value))
            this.brand = null;
          else {
            if (this.brand == null)
              this.brand = new StringType();
            this.brand.setValue(value);
          }
          return this;
        }

        /**
         * @return {@link #note} (Notes for special requirements such as coatings and lens materials.)
         */
        public List<Annotation> getNote() { 
          if (this.note == null)
            this.note = new ArrayList<Annotation>();
          return this.note;
        }

        /**
         * @return Returns a reference to <code>this</code> for easy method chaining
         */
        public VisionPrescriptionDispenseComponent setNote(List<Annotation> theNote) { 
          this.note = theNote;
          return this;
        }

        public boolean hasNote() { 
          if (this.note == null)
            return false;
          for (Annotation item : this.note)
            if (!item.isEmpty())
              return true;
          return false;
        }

        public Annotation addNote() { //3
          Annotation t = new Annotation();
          if (this.note == null)
            this.note = new ArrayList<Annotation>();
          this.note.add(t);
          return t;
        }

        public VisionPrescriptionDispenseComponent addNote(Annotation t) { //3
          if (t == null)
            return this;
          if (this.note == null)
            this.note = new ArrayList<Annotation>();
          this.note.add(t);
          return this;
        }

        /**
         * @return The first repetition of repeating field {@link #note}, creating it if it does not already exist
         */
        public Annotation getNoteFirstRep() { 
          if (getNote().isEmpty()) {
            addNote();
          }
          return getNote().get(0);
        }

        protected void listChildren(List<Property> children) {
          super.listChildren(children);
          children.add(new Property("product", "CodeableConcept", "Identifies the type of vision correction product which is required for the patient.", 0, 1, product));
          children.add(new Property("eye", "code", "The eye for which the lens applies.", 0, 1, eye));
          children.add(new Property("sphere", "decimal", "Lens power measured in dioptres (0.25 units).", 0, 1, sphere));
          children.add(new Property("cylinder", "decimal", "Power adjustment for astigmatism measured in dioptres (0.25 units).", 0, 1, cylinder));
          children.add(new Property("axis", "integer", "Adjustment for astigmatism measured in integer degrees.", 0, 1, axis));
          children.add(new Property("prism", "", "Allows for adjustment on two axis.", 0, java.lang.Integer.MAX_VALUE, prism));
          children.add(new Property("add", "decimal", "Power adjustment for multifocal lenses measured in dioptres (0.25 units).", 0, 1, add));
          children.add(new Property("power", "decimal", "Contact lens power measured in dioptres (0.25 units).", 0, 1, power));
          children.add(new Property("backCurve", "decimal", "Back curvature measured in millimetres.", 0, 1, backCurve));
          children.add(new Property("diameter", "decimal", "Contact lens diameter measured in millimetres.", 0, 1, diameter));
          children.add(new Property("duration", "SimpleQuantity", "The recommended maximum wear period for the lens.", 0, 1, duration));
          children.add(new Property("color", "string", "Special color or pattern.", 0, 1, color));
          children.add(new Property("brand", "string", "Brand recommendations or restrictions.", 0, 1, brand));
          children.add(new Property("note", "Annotation", "Notes for special requirements such as coatings and lens materials.", 0, java.lang.Integer.MAX_VALUE, note));
        }

        @Override
        public Property getNamedProperty(int _hash, String _name, boolean _checkValid) throws FHIRException {
          switch (_hash) {
          case -309474065: /*product*/  return new Property("product", "CodeableConcept", "Identifies the type of vision correction product which is required for the patient.", 0, 1, product);
          case 100913: /*eye*/  return new Property("eye", "code", "The eye for which the lens applies.", 0, 1, eye);
          case -895981619: /*sphere*/  return new Property("sphere", "decimal", "Lens power measured in dioptres (0.25 units).", 0, 1, sphere);
          case -349378602: /*cylinder*/  return new Property("cylinder", "decimal", "Power adjustment for astigmatism measured in dioptres (0.25 units).", 0, 1, cylinder);
          case 3008417: /*axis*/  return new Property("axis", "integer", "Adjustment for astigmatism measured in integer degrees.", 0, 1, axis);
          case 106935105: /*prism*/  return new Property("prism", "", "Allows for adjustment on two axis.", 0, java.lang.Integer.MAX_VALUE, prism);
          case 96417: /*add*/  return new Property("add", "decimal", "Power adjustment for multifocal lenses measured in dioptres (0.25 units).", 0, 1, add);
          case 106858757: /*power*/  return new Property("power", "decimal", "Contact lens power measured in dioptres (0.25 units).", 0, 1, power);
          case 1309344840: /*backCurve*/  return new Property("backCurve", "decimal", "Back curvature measured in millimetres.", 0, 1, backCurve);
          case -233204595: /*diameter*/  return new Property("diameter", "decimal", "Contact lens diameter measured in millimetres.", 0, 1, diameter);
          case -1992012396: /*duration*/  return new Property("duration", "SimpleQuantity", "The recommended maximum wear period for the lens.", 0, 1, duration);
          case 94842723: /*color*/  return new Property("color", "string", "Special color or pattern.", 0, 1, color);
          case 93997959: /*brand*/  return new Property("brand", "string", "Brand recommendations or restrictions.", 0, 1, brand);
          case 3387378: /*note*/  return new Property("note", "Annotation", "Notes for special requirements such as coatings and lens materials.", 0, java.lang.Integer.MAX_VALUE, note);
          default: return super.getNamedProperty(_hash, _name, _checkValid);
          }

        }

      @Override
      public Base[] getProperty(int hash, String name, boolean checkValid) throws FHIRException {
        switch (hash) {
        case -309474065: /*product*/ return this.product == null ? new Base[0] : new Base[] {this.product}; // CodeableConcept
        case 100913: /*eye*/ return this.eye == null ? new Base[0] : new Base[] {this.eye}; // Enumeration<VisionEyes>
        case -895981619: /*sphere*/ return this.sphere == null ? new Base[0] : new Base[] {this.sphere}; // DecimalType
        case -349378602: /*cylinder*/ return this.cylinder == null ? new Base[0] : new Base[] {this.cylinder}; // DecimalType
        case 3008417: /*axis*/ return this.axis == null ? new Base[0] : new Base[] {this.axis}; // IntegerType
        case 106935105: /*prism*/ return this.prism == null ? new Base[0] : this.prism.toArray(new Base[this.prism.size()]); // PrismComponent
        case 96417: /*add*/ return this.add == null ? new Base[0] : new Base[] {this.add}; // DecimalType
        case 106858757: /*power*/ return this.power == null ? new Base[0] : new Base[] {this.power}; // DecimalType
        case 1309344840: /*backCurve*/ return this.backCurve == null ? new Base[0] : new Base[] {this.backCurve}; // DecimalType
        case -233204595: /*diameter*/ return this.diameter == null ? new Base[0] : new Base[] {this.diameter}; // DecimalType
        case -1992012396: /*duration*/ return this.duration == null ? new Base[0] : new Base[] {this.duration}; // Quantity
        case 94842723: /*color*/ return this.color == null ? new Base[0] : new Base[] {this.color}; // StringType
        case 93997959: /*brand*/ return this.brand == null ? new Base[0] : new Base[] {this.brand}; // StringType
        case 3387378: /*note*/ return this.note == null ? new Base[0] : this.note.toArray(new Base[this.note.size()]); // Annotation
        default: return super.getProperty(hash, name, checkValid);
        }

      }

      @Override
      public Base setProperty(int hash, String name, Base value) throws FHIRException {
        switch (hash) {
        case -309474065: // product
          this.product = castToCodeableConcept(value); // CodeableConcept
          return value;
        case 100913: // eye
          value = new VisionEyesEnumFactory().fromType(castToCode(value));
          this.eye = (Enumeration) value; // Enumeration<VisionEyes>
          return value;
        case -895981619: // sphere
          this.sphere = castToDecimal(value); // DecimalType
          return value;
        case -349378602: // cylinder
          this.cylinder = castToDecimal(value); // DecimalType
          return value;
        case 3008417: // axis
          this.axis = castToInteger(value); // IntegerType
          return value;
        case 106935105: // prism
          this.getPrism().add((PrismComponent) value); // PrismComponent
          return value;
        case 96417: // add
          this.add = castToDecimal(value); // DecimalType
          return value;
        case 106858757: // power
          this.power = castToDecimal(value); // DecimalType
          return value;
        case 1309344840: // backCurve
          this.backCurve = castToDecimal(value); // DecimalType
          return value;
        case -233204595: // diameter
          this.diameter = castToDecimal(value); // DecimalType
          return value;
        case -1992012396: // duration
          this.duration = castToQuantity(value); // Quantity
          return value;
        case 94842723: // color
          this.color = castToString(value); // StringType
          return value;
        case 93997959: // brand
          this.brand = castToString(value); // StringType
          return value;
        case 3387378: // note
          this.getNote().add(castToAnnotation(value)); // Annotation
          return value;
        default: return super.setProperty(hash, name, value);
        }

      }

      @Override
      public Base setProperty(String name, Base value) throws FHIRException {
        if (name.equals("product")) {
          this.product = castToCodeableConcept(value); // CodeableConcept
        } else if (name.equals("eye")) {
          value = new VisionEyesEnumFactory().fromType(castToCode(value));
          this.eye = (Enumeration) value; // Enumeration<VisionEyes>
        } else if (name.equals("sphere")) {
          this.sphere = castToDecimal(value); // DecimalType
        } else if (name.equals("cylinder")) {
          this.cylinder = castToDecimal(value); // DecimalType
        } else if (name.equals("axis")) {
          this.axis = castToInteger(value); // IntegerType
        } else if (name.equals("prism")) {
          this.getPrism().add((PrismComponent) value);
        } else if (name.equals("add")) {
          this.add = castToDecimal(value); // DecimalType
        } else if (name.equals("power")) {
          this.power = castToDecimal(value); // DecimalType
        } else if (name.equals("backCurve")) {
          this.backCurve = castToDecimal(value); // DecimalType
        } else if (name.equals("diameter")) {
          this.diameter = castToDecimal(value); // DecimalType
        } else if (name.equals("duration")) {
          this.duration = castToQuantity(value); // Quantity
        } else if (name.equals("color")) {
          this.color = castToString(value); // StringType
        } else if (name.equals("brand")) {
          this.brand = castToString(value); // StringType
        } else if (name.equals("note")) {
          this.getNote().add(castToAnnotation(value));
        } else
          return super.setProperty(name, value);
        return value;
      }

      @Override
      public Base makeProperty(int hash, String name) throws FHIRException {
        switch (hash) {
        case -309474065:  return getProduct(); 
        case 100913:  return getEyeElement();
        case -895981619:  return getSphereElement();
        case -349378602:  return getCylinderElement();
        case 3008417:  return getAxisElement();
        case 106935105:  return addPrism(); 
        case 96417:  return getAddElement();
        case 106858757:  return getPowerElement();
        case 1309344840:  return getBackCurveElement();
        case -233204595:  return getDiameterElement();
        case -1992012396:  return getDuration(); 
        case 94842723:  return getColorElement();
        case 93997959:  return getBrandElement();
        case 3387378:  return addNote(); 
        default: return super.makeProperty(hash, name);
        }

      }

      @Override
      public String[] getTypesForProperty(int hash, String name) throws FHIRException {
        switch (hash) {
        case -309474065: /*product*/ return new String[] {"CodeableConcept"};
        case 100913: /*eye*/ return new String[] {"code"};
        case -895981619: /*sphere*/ return new String[] {"decimal"};
        case -349378602: /*cylinder*/ return new String[] {"decimal"};
        case 3008417: /*axis*/ return new String[] {"integer"};
        case 106935105: /*prism*/ return new String[] {};
        case 96417: /*add*/ return new String[] {"decimal"};
        case 106858757: /*power*/ return new String[] {"decimal"};
        case 1309344840: /*backCurve*/ return new String[] {"decimal"};
        case -233204595: /*diameter*/ return new String[] {"decimal"};
        case -1992012396: /*duration*/ return new String[] {"SimpleQuantity"};
        case 94842723: /*color*/ return new String[] {"string"};
        case 93997959: /*brand*/ return new String[] {"string"};
        case 3387378: /*note*/ return new String[] {"Annotation"};
        default: return super.getTypesForProperty(hash, name);
        }

      }

      @Override
      public Base addChild(String name) throws FHIRException {
        if (name.equals("product")) {
          this.product = new CodeableConcept();
          return this.product;
        }
        else if (name.equals("eye")) {
          throw new FHIRException("Cannot call addChild on a primitive type VisionPrescription.eye");
        }
        else if (name.equals("sphere")) {
          throw new FHIRException("Cannot call addChild on a primitive type VisionPrescription.sphere");
        }
        else if (name.equals("cylinder")) {
          throw new FHIRException("Cannot call addChild on a primitive type VisionPrescription.cylinder");
        }
        else if (name.equals("axis")) {
          throw new FHIRException("Cannot call addChild on a primitive type VisionPrescription.axis");
        }
        else if (name.equals("prism")) {
          return addPrism();
        }
        else if (name.equals("add")) {
          throw new FHIRException("Cannot call addChild on a primitive type VisionPrescription.add");
        }
        else if (name.equals("power")) {
          throw new FHIRException("Cannot call addChild on a primitive type VisionPrescription.power");
        }
        else if (name.equals("backCurve")) {
          throw new FHIRException("Cannot call addChild on a primitive type VisionPrescription.backCurve");
        }
        else if (name.equals("diameter")) {
          throw new FHIRException("Cannot call addChild on a primitive type VisionPrescription.diameter");
        }
        else if (name.equals("duration")) {
          this.duration = new Quantity();
          return this.duration;
        }
        else if (name.equals("color")) {
          throw new FHIRException("Cannot call addChild on a primitive type VisionPrescription.color");
        }
        else if (name.equals("brand")) {
          throw new FHIRException("Cannot call addChild on a primitive type VisionPrescription.brand");
        }
        else if (name.equals("note")) {
          return addNote();
        }
        else
          return super.addChild(name);
      }

      public VisionPrescriptionDispenseComponent copy() {
        VisionPrescriptionDispenseComponent dst = new VisionPrescriptionDispenseComponent();
        copyValues(dst);
        dst.product = product == null ? null : product.copy();
        dst.eye = eye == null ? null : eye.copy();
        dst.sphere = sphere == null ? null : sphere.copy();
        dst.cylinder = cylinder == null ? null : cylinder.copy();
        dst.axis = axis == null ? null : axis.copy();
        if (prism != null) {
          dst.prism = new ArrayList<PrismComponent>();
          for (PrismComponent i : prism)
            dst.prism.add(i.copy());
        };
        dst.add = add == null ? null : add.copy();
        dst.power = power == null ? null : power.copy();
        dst.backCurve = backCurve == null ? null : backCurve.copy();
        dst.diameter = diameter == null ? null : diameter.copy();
        dst.duration = duration == null ? null : duration.copy();
        dst.color = color == null ? null : color.copy();
        dst.brand = brand == null ? null : brand.copy();
        if (note != null) {
          dst.note = new ArrayList<Annotation>();
          for (Annotation i : note)
            dst.note.add(i.copy());
        };
        return dst;
      }

      @Override
      public boolean equalsDeep(Base other_) {
        if (!super.equalsDeep(other_))
          return false;
        if (!(other_ instanceof VisionPrescriptionDispenseComponent))
          return false;
        VisionPrescriptionDispenseComponent o = (VisionPrescriptionDispenseComponent) other_;
        return compareDeep(product, o.product, true) && compareDeep(eye, o.eye, true) && compareDeep(sphere, o.sphere, true)
           && compareDeep(cylinder, o.cylinder, true) && compareDeep(axis, o.axis, true) && compareDeep(prism, o.prism, true)
           && compareDeep(add, o.add, true) && compareDeep(power, o.power, true) && compareDeep(backCurve, o.backCurve, true)
           && compareDeep(diameter, o.diameter, true) && compareDeep(duration, o.duration, true) && compareDeep(color, o.color, true)
           && compareDeep(brand, o.brand, true) && compareDeep(note, o.note, true);
      }

      @Override
      public boolean equalsShallow(Base other_) {
        if (!super.equalsShallow(other_))
          return false;
        if (!(other_ instanceof VisionPrescriptionDispenseComponent))
          return false;
        VisionPrescriptionDispenseComponent o = (VisionPrescriptionDispenseComponent) other_;
        return compareValues(eye, o.eye, true) && compareValues(sphere, o.sphere, true) && compareValues(cylinder, o.cylinder, true)
           && compareValues(axis, o.axis, true) && compareValues(add, o.add, true) && compareValues(power, o.power, true)
           && compareValues(backCurve, o.backCurve, true) && compareValues(diameter, o.diameter, true) && compareValues(color, o.color, true)
           && compareValues(brand, o.brand, true);
      }

      public boolean isEmpty() {
        return super.isEmpty() && ca.uhn.fhir.util.ElementUtil.isEmpty(product, eye, sphere, cylinder
          , axis, prism, add, power, backCurve, diameter, duration, color, brand, note
          );
      }

  public String fhirType() {
    return "VisionPrescription.dispense";

  }

  }

    @Block()
    public static class PrismComponent extends BackboneElement implements IBaseBackboneElement {
        /**
         * Amount of prism to compensate for eye alignment in fractional units.
         */
        @Child(name = "amount", type = {DecimalType.class}, order=1, min=1, max=1, modifier=false, summary=false)
        @Description(shortDefinition="Amount of adjustment", formalDefinition="Amount of prism to compensate for eye alignment in fractional units." )
        protected DecimalType amount;

        /**
         * The relative base, or reference lens edge, for the prism.
         */
        @Child(name = "base", type = {CodeType.class}, order=2, min=1, max=1, modifier=false, summary=false)
        @Description(shortDefinition="up | down | in | out", formalDefinition="The relative base, or reference lens edge, for the prism." )
        @ca.uhn.fhir.model.api.annotation.Binding(valueSet="http://hl7.org/fhir/ValueSet/vision-base-codes")
        protected Enumeration<VisionBase> base;

        private static final long serialVersionUID = 1677247628L;

    /**
     * Constructor
     */
      public PrismComponent() {
        super();
      }

    /**
     * Constructor
     */
      public PrismComponent(DecimalType amount, Enumeration<VisionBase> base) {
        super();
        this.amount = amount;
        this.base = base;
      }

        /**
         * @return {@link #amount} (Amount of prism to compensate for eye alignment in fractional units.). This is the underlying object with id, value and extensions. The accessor "getAmount" gives direct access to the value
         */
        public DecimalType getAmountElement() { 
          if (this.amount == null)
            if (Configuration.errorOnAutoCreate())
              throw new Error("Attempt to auto-create PrismComponent.amount");
            else if (Configuration.doAutoCreate())
              this.amount = new DecimalType(); // bb
          return this.amount;
        }

        public boolean hasAmountElement() { 
          return this.amount != null && !this.amount.isEmpty();
        }

        public boolean hasAmount() { 
          return this.amount != null && !this.amount.isEmpty();
        }

        /**
         * @param value {@link #amount} (Amount of prism to compensate for eye alignment in fractional units.). This is the underlying object with id, value and extensions. The accessor "getAmount" gives direct access to the value
         */
        public PrismComponent setAmountElement(DecimalType value) { 
          this.amount = value;
          return this;
        }

        /**
         * @return Amount of prism to compensate for eye alignment in fractional units.
         */
        public BigDecimal getAmount() { 
          return this.amount == null ? null : this.amount.getValue();
        }

        /**
         * @param value Amount of prism to compensate for eye alignment in fractional units.
         */
        public PrismComponent setAmount(BigDecimal value) { 
            if (this.amount == null)
              this.amount = new DecimalType();
            this.amount.setValue(value);
          return this;
        }

        /**
         * @param value Amount of prism to compensate for eye alignment in fractional units.
         */
        public PrismComponent setAmount(long value) { 
              this.amount = new DecimalType();
            this.amount.setValue(value);
          return this;
        }

        /**
         * @param value Amount of prism to compensate for eye alignment in fractional units.
         */
        public PrismComponent setAmount(double value) { 
              this.amount = new DecimalType();
            this.amount.setValue(value);
          return this;
        }

        /**
         * @return {@link #base} (The relative base, or reference lens edge, for the prism.). This is the underlying object with id, value and extensions. The accessor "getBase" gives direct access to the value
         */
        public Enumeration<VisionBase> getBaseElement() { 
          if (this.base == null)
            if (Configuration.errorOnAutoCreate())
              throw new Error("Attempt to auto-create PrismComponent.base");
            else if (Configuration.doAutoCreate())
              this.base = new Enumeration<VisionBase>(new VisionBaseEnumFactory()); // bb
          return this.base;
        }

        public boolean hasBaseElement() { 
          return this.base != null && !this.base.isEmpty();
        }

        public boolean hasBase() { 
          return this.base != null && !this.base.isEmpty();
        }

        /**
         * @param value {@link #base} (The relative base, or reference lens edge, for the prism.). This is the underlying object with id, value and extensions. The accessor "getBase" gives direct access to the value
         */
        public PrismComponent setBaseElement(Enumeration<VisionBase> value) { 
          this.base = value;
          return this;
        }

        /**
         * @return The relative base, or reference lens edge, for the prism.
         */
        public VisionBase getBase() { 
          return this.base == null ? null : this.base.getValue();
        }

        /**
         * @param value The relative base, or reference lens edge, for the prism.
         */
        public PrismComponent setBase(VisionBase value) { 
            if (this.base == null)
              this.base = new Enumeration<VisionBase>(new VisionBaseEnumFactory());
            this.base.setValue(value);
          return this;
        }

        protected void listChildren(List<Property> children) {
          super.listChildren(children);
          children.add(new Property("amount", "decimal", "Amount of prism to compensate for eye alignment in fractional units.", 0, 1, amount));
          children.add(new Property("base", "code", "The relative base, or reference lens edge, for the prism.", 0, 1, base));
        }

        @Override
        public Property getNamedProperty(int _hash, String _name, boolean _checkValid) throws FHIRException {
          switch (_hash) {
          case -1413853096: /*amount*/  return new Property("amount", "decimal", "Amount of prism to compensate for eye alignment in fractional units.", 0, 1, amount);
          case 3016401: /*base*/  return new Property("base", "code", "The relative base, or reference lens edge, for the prism.", 0, 1, base);
          default: return super.getNamedProperty(_hash, _name, _checkValid);
          }

        }

      @Override
      public Base[] getProperty(int hash, String name, boolean checkValid) throws FHIRException {
        switch (hash) {
        case -1413853096: /*amount*/ return this.amount == null ? new Base[0] : new Base[] {this.amount}; // DecimalType
        case 3016401: /*base*/ return this.base == null ? new Base[0] : new Base[] {this.base}; // Enumeration<VisionBase>
        default: return super.getProperty(hash, name, checkValid);
        }

      }

      @Override
      public Base setProperty(int hash, String name, Base value) throws FHIRException {
        switch (hash) {
        case -1413853096: // amount
          this.amount = castToDecimal(value); // DecimalType
          return value;
        case 3016401: // base
          value = new VisionBaseEnumFactory().fromType(castToCode(value));
          this.base = (Enumeration) value; // Enumeration<VisionBase>
          return value;
        default: return super.setProperty(hash, name, value);
        }

      }

      @Override
      public Base setProperty(String name, Base value) throws FHIRException {
        if (name.equals("amount")) {
          this.amount = castToDecimal(value); // DecimalType
        } else if (name.equals("base")) {
          value = new VisionBaseEnumFactory().fromType(castToCode(value));
          this.base = (Enumeration) value; // Enumeration<VisionBase>
        } else
          return super.setProperty(name, value);
        return value;
      }

      @Override
      public Base makeProperty(int hash, String name) throws FHIRException {
        switch (hash) {
        case -1413853096:  return getAmountElement();
        case 3016401:  return getBaseElement();
        default: return super.makeProperty(hash, name);
        }

      }

      @Override
      public String[] getTypesForProperty(int hash, String name) throws FHIRException {
        switch (hash) {
        case -1413853096: /*amount*/ return new String[] {"decimal"};
        case 3016401: /*base*/ return new String[] {"code"};
        default: return super.getTypesForProperty(hash, name);
        }

      }

      @Override
      public Base addChild(String name) throws FHIRException {
        if (name.equals("amount")) {
          throw new FHIRException("Cannot call addChild on a primitive type VisionPrescription.amount");
        }
        else if (name.equals("base")) {
          throw new FHIRException("Cannot call addChild on a primitive type VisionPrescription.base");
        }
        else
          return super.addChild(name);
      }

      public PrismComponent copy() {
        PrismComponent dst = new PrismComponent();
        copyValues(dst);
        dst.amount = amount == null ? null : amount.copy();
        dst.base = base == null ? null : base.copy();
        return dst;
      }

      @Override
      public boolean equalsDeep(Base other_) {
        if (!super.equalsDeep(other_))
          return false;
        if (!(other_ instanceof PrismComponent))
          return false;
        PrismComponent o = (PrismComponent) other_;
        return compareDeep(amount, o.amount, true) && compareDeep(base, o.base, true);
      }

      @Override
      public boolean equalsShallow(Base other_) {
        if (!super.equalsShallow(other_))
          return false;
        if (!(other_ instanceof PrismComponent))
          return false;
        PrismComponent o = (PrismComponent) other_;
        return compareValues(amount, o.amount, true) && compareValues(base, o.base, true);
      }

      public boolean isEmpty() {
        return super.isEmpty() && ca.uhn.fhir.util.ElementUtil.isEmpty(amount, base);
      }

  public String fhirType() {
    return "VisionPrescription.dispense.prism";

  }

  }

    /**
     * Business identifier which may be used by other parties to reference or identify the prescription.
     */
    @Child(name = "identifier", type = {Identifier.class}, order=0, min=0, max=Child.MAX_UNLIMITED, modifier=false, summary=false)
    @Description(shortDefinition="Business identifier", formalDefinition="Business identifier which may be used by other parties to reference or identify the prescription." )
    protected List<Identifier> identifier;

    /**
     * The status of the resource instance.
     */
    @Child(name = "status", type = {CodeType.class}, order=1, min=0, max=1, modifier=true, summary=true)
    @Description(shortDefinition="active | cancelled | draft | entered-in-error", formalDefinition="The status of the resource instance." )
    @ca.uhn.fhir.model.api.annotation.Binding(valueSet="http://hl7.org/fhir/ValueSet/fm-status")
    protected Enumeration<VisionStatus> status;

    /**
     * A link to a resource representing the person to whom the vision products will be supplied.
     */
    @Child(name = "patient", type = {Patient.class}, order=2, min=0, max=1, modifier=false, summary=false)
    @Description(shortDefinition="Who prescription is for", formalDefinition="A link to a resource representing the person to whom the vision products will be supplied." )
    protected Reference patient;

    /**
     * The actual object that is the target of the reference (A link to a resource representing the person to whom the vision products will be supplied.)
     */
    protected Patient patientTarget;

    /**
     * A link to a resource that identifies the particular occurrence of contact between patient and health care provider.
     */
    @Child(name = "encounter", type = {Encounter.class}, order=3, min=0, max=1, modifier=false, summary=false)
    @Description(shortDefinition="Created during encounter / admission / stay", formalDefinition="A link to a resource that identifies the particular occurrence of contact between patient and health care provider." )
    protected Reference encounter;

    /**
     * The actual object that is the target of the reference (A link to a resource that identifies the particular occurrence of contact between patient and health care provider.)
     */
    protected Encounter encounterTarget;

    /**
     * The date (and perhaps time) when the prescription was written.
     */
    @Child(name = "dateWritten", type = {DateTimeType.class}, order=4, min=0, max=1, modifier=false, summary=false)
    @Description(shortDefinition="When prescription was authorized", formalDefinition="The date (and perhaps time) when the prescription was written." )
    protected DateTimeType dateWritten;

    /**
     * The healthcare professional responsible for authorizing the prescription.
     */
    @Child(name = "prescriber", type = {Practitioner.class, PractitionerRole.class}, order=5, min=0, max=1, modifier=false, summary=false)
    @Description(shortDefinition="Who authorizes the vision product", formalDefinition="The healthcare professional responsible for authorizing the prescription." )
    protected Reference prescriber;

    /**
     * The actual object that is the target of the reference (The healthcare professional responsible for authorizing the prescription.)
     */
    protected Resource prescriberTarget;

    /**
     * Can be the reason or the indication for writing the prescription.
     */
    @Child(name = "reason", type = {CodeableConcept.class, Condition.class}, order=6, min=0, max=1, modifier=false, summary=false)
    @Description(shortDefinition="Reason or indication for writing the prescription", formalDefinition="Can be the reason or the indication for writing the prescription." )
    protected Type reason;

    /**
     * Deals with details of the dispense part of the supply specification.
     */
    @Child(name = "dispense", type = {}, order=7, min=0, max=Child.MAX_UNLIMITED, modifier=false, summary=false)
    @Description(shortDefinition="Vision supply authorization", formalDefinition="Deals with details of the dispense part of the supply specification." )
    protected List<VisionPrescriptionDispenseComponent> dispense;

    private static final long serialVersionUID = -1803032530L;

  /**
   * Constructor
   */
    public VisionPrescription() {
      super();
    }

    /**
     * @return {@link #identifier} (Business identifier which may be used by other parties to reference or identify the prescription.)
     */
    public List<Identifier> getIdentifier() { 
      if (this.identifier == null)
        this.identifier = new ArrayList<Identifier>();
      return this.identifier;
    }

    /**
     * @return Returns a reference to <code>this</code> for easy method chaining
     */
    public VisionPrescription setIdentifier(List<Identifier> theIdentifier) { 
      this.identifier = theIdentifier;
      return this;
    }

    public boolean hasIdentifier() { 
      if (this.identifier == null)
        return false;
      for (Identifier item : this.identifier)
        if (!item.isEmpty())
          return true;
      return false;
    }

    public Identifier addIdentifier() { //3
      Identifier t = new Identifier();
      if (this.identifier == null)
        this.identifier = new ArrayList<Identifier>();
      this.identifier.add(t);
      return t;
    }

    public VisionPrescription addIdentifier(Identifier t) { //3
      if (t == null)
        return this;
      if (this.identifier == null)
        this.identifier = new ArrayList<Identifier>();
      this.identifier.add(t);
      return this;
    }

    /**
     * @return The first repetition of repeating field {@link #identifier}, creating it if it does not already exist
     */
    public Identifier getIdentifierFirstRep() { 
      if (getIdentifier().isEmpty()) {
        addIdentifier();
      }
      return getIdentifier().get(0);
    }

    /**
     * @return {@link #status} (The status of the resource instance.). This is the underlying object with id, value and extensions. The accessor "getStatus" gives direct access to the value
     */
    public Enumeration<VisionStatus> getStatusElement() { 
      if (this.status == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create VisionPrescription.status");
        else if (Configuration.doAutoCreate())
          this.status = new Enumeration<VisionStatus>(new VisionStatusEnumFactory()); // bb
      return this.status;
    }

    public boolean hasStatusElement() { 
      return this.status != null && !this.status.isEmpty();
    }

    public boolean hasStatus() { 
      return this.status != null && !this.status.isEmpty();
    }

    /**
     * @param value {@link #status} (The status of the resource instance.). This is the underlying object with id, value and extensions. The accessor "getStatus" gives direct access to the value
     */
    public VisionPrescription setStatusElement(Enumeration<VisionStatus> value) { 
      this.status = value;
      return this;
    }

    /**
     * @return The status of the resource instance.
     */
    public VisionStatus getStatus() { 
      return this.status == null ? null : this.status.getValue();
    }

    /**
     * @param value The status of the resource instance.
     */
    public VisionPrescription setStatus(VisionStatus value) { 
      if (value == null)
        this.status = null;
      else {
        if (this.status == null)
          this.status = new Enumeration<VisionStatus>(new VisionStatusEnumFactory());
        this.status.setValue(value);
      }
      return this;
    }

    /**
     * @return {@link #patient} (A link to a resource representing the person to whom the vision products will be supplied.)
     */
    public Reference getPatient() { 
      if (this.patient == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create VisionPrescription.patient");
        else if (Configuration.doAutoCreate())
          this.patient = new Reference(); // cc
      return this.patient;
    }

    public boolean hasPatient() { 
      return this.patient != null && !this.patient.isEmpty();
    }

    /**
     * @param value {@link #patient} (A link to a resource representing the person to whom the vision products will be supplied.)
     */
    public VisionPrescription setPatient(Reference value) { 
      this.patient = value;
      return this;
    }

    /**
     * @return {@link #patient} The actual object that is the target of the reference. The reference library doesn't populate this, but you can use it to hold the resource if you resolve it. (A link to a resource representing the person to whom the vision products will be supplied.)
     */
    public Patient getPatientTarget() { 
      if (this.patientTarget == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create VisionPrescription.patient");
        else if (Configuration.doAutoCreate())
          this.patientTarget = new Patient(); // aa
      return this.patientTarget;
    }

    /**
     * @param value {@link #patient} The actual object that is the target of the reference. The reference library doesn't use these, but you can use it to hold the resource if you resolve it. (A link to a resource representing the person to whom the vision products will be supplied.)
     */
    public VisionPrescription setPatientTarget(Patient value) { 
      this.patientTarget = value;
      return this;
    }

    /**
     * @return {@link #encounter} (A link to a resource that identifies the particular occurrence of contact between patient and health care provider.)
     */
    public Reference getEncounter() { 
      if (this.encounter == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create VisionPrescription.encounter");
        else if (Configuration.doAutoCreate())
          this.encounter = new Reference(); // cc
      return this.encounter;
    }

    public boolean hasEncounter() { 
      return this.encounter != null && !this.encounter.isEmpty();
    }

    /**
     * @param value {@link #encounter} (A link to a resource that identifies the particular occurrence of contact between patient and health care provider.)
     */
    public VisionPrescription setEncounter(Reference value) { 
      this.encounter = value;
      return this;
    }

    /**
     * @return {@link #encounter} The actual object that is the target of the reference. The reference library doesn't populate this, but you can use it to hold the resource if you resolve it. (A link to a resource that identifies the particular occurrence of contact between patient and health care provider.)
     */
    public Encounter getEncounterTarget() { 
      if (this.encounterTarget == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create VisionPrescription.encounter");
        else if (Configuration.doAutoCreate())
          this.encounterTarget = new Encounter(); // aa
      return this.encounterTarget;
    }

    /**
     * @param value {@link #encounter} The actual object that is the target of the reference. The reference library doesn't use these, but you can use it to hold the resource if you resolve it. (A link to a resource that identifies the particular occurrence of contact between patient and health care provider.)
     */
    public VisionPrescription setEncounterTarget(Encounter value) { 
      this.encounterTarget = value;
      return this;
    }

    /**
     * @return {@link #dateWritten} (The date (and perhaps time) when the prescription was written.). This is the underlying object with id, value and extensions. The accessor "getDateWritten" gives direct access to the value
     */
    public DateTimeType getDateWrittenElement() { 
      if (this.dateWritten == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create VisionPrescription.dateWritten");
        else if (Configuration.doAutoCreate())
          this.dateWritten = new DateTimeType(); // bb
      return this.dateWritten;
    }

    public boolean hasDateWrittenElement() { 
      return this.dateWritten != null && !this.dateWritten.isEmpty();
    }

    public boolean hasDateWritten() { 
      return this.dateWritten != null && !this.dateWritten.isEmpty();
    }

    /**
     * @param value {@link #dateWritten} (The date (and perhaps time) when the prescription was written.). This is the underlying object with id, value and extensions. The accessor "getDateWritten" gives direct access to the value
     */
    public VisionPrescription setDateWrittenElement(DateTimeType value) { 
      this.dateWritten = value;
      return this;
    }

    /**
     * @return The date (and perhaps time) when the prescription was written.
     */
    public Date getDateWritten() { 
      return this.dateWritten == null ? null : this.dateWritten.getValue();
    }

    /**
     * @param value The date (and perhaps time) when the prescription was written.
     */
    public VisionPrescription setDateWritten(Date value) { 
      if (value == null)
        this.dateWritten = null;
      else {
        if (this.dateWritten == null)
          this.dateWritten = new DateTimeType();
        this.dateWritten.setValue(value);
      }
      return this;
    }

    /**
     * @return {@link #prescriber} (The healthcare professional responsible for authorizing the prescription.)
     */
    public Reference getPrescriber() { 
      if (this.prescriber == null)
        if (Configuration.errorOnAutoCreate())
          throw new Error("Attempt to auto-create VisionPrescription.prescriber");
        else if (Configuration.doAutoCreate())
          this.prescriber = new Reference(); // cc
      return this.prescriber;
    }

    public boolean hasPrescriber() { 
      return this.prescriber != null && !this.prescriber.isEmpty();
    }

    /**
     * @param value {@link #prescriber} (The healthcare professional responsible for authorizing the prescription.)
     */
    public VisionPrescription setPrescriber(Reference value) { 
      this.prescriber = value;
      return this;
    }

    /**
     * @return {@link #prescriber} The actual object that is the target of the reference. The reference library doesn't populate this, but you can use it to hold the resource if you resolve it. (The healthcare professional responsible for authorizing the prescription.)
     */
    public Resource getPrescriberTarget() { 
      return this.prescriberTarget;
    }

    /**
     * @param value {@link #prescriber} The actual object that is the target of the reference. The reference library doesn't use these, but you can use it to hold the resource if you resolve it. (The healthcare professional responsible for authorizing the prescription.)
     */
    public VisionPrescription setPrescriberTarget(Resource value) { 
      this.prescriberTarget = value;
      return this;
    }

    /**
     * @return {@link #reason} (Can be the reason or the indication for writing the prescription.)
     */
    public Type getReason() { 
      return this.reason;
    }

    /**
     * @return {@link #reason} (Can be the reason or the indication for writing the prescription.)
     */
    public CodeableConcept getReasonCodeableConcept() throws FHIRException { 
      if (this.reason == null)
        return null;
      if (!(this.reason instanceof CodeableConcept))
        throw new FHIRException("Type mismatch: the type CodeableConcept was expected, but "+this.reason.getClass().getName()+" was encountered");
      return (CodeableConcept) this.reason;
    }

    public boolean hasReasonCodeableConcept() { 
      return this != null && this.reason instanceof CodeableConcept;
    }

    /**
     * @return {@link #reason} (Can be the reason or the indication for writing the prescription.)
     */
    public Reference getReasonReference() throws FHIRException { 
      if (this.reason == null)
        return null;
      if (!(this.reason instanceof Reference))
        throw new FHIRException("Type mismatch: the type Reference was expected, but "+this.reason.getClass().getName()+" was encountered");
      return (Reference) this.reason;
    }

    public boolean hasReasonReference() { 
      return this != null && this.reason instanceof Reference;
    }

    public boolean hasReason() { 
      return this.reason != null && !this.reason.isEmpty();
    }

    /**
     * @param value {@link #reason} (Can be the reason or the indication for writing the prescription.)
     */
    public VisionPrescription setReason(Type value) { 
      if (value != null && !(value instanceof CodeableConcept || value instanceof Reference))
        throw new Error("Not the right type for VisionPrescription.reason[x]: "+value.fhirType());
      this.reason = value;
      return this;
    }

    /**
     * @return {@link #dispense} (Deals with details of the dispense part of the supply specification.)
     */
    public List<VisionPrescriptionDispenseComponent> getDispense() { 
      if (this.dispense == null)
        this.dispense = new ArrayList<VisionPrescriptionDispenseComponent>();
      return this.dispense;
    }

    /**
     * @return Returns a reference to <code>this</code> for easy method chaining
     */
    public VisionPrescription setDispense(List<VisionPrescriptionDispenseComponent> theDispense) { 
      this.dispense = theDispense;
      return this;
    }

    public boolean hasDispense() { 
      if (this.dispense == null)
        return false;
      for (VisionPrescriptionDispenseComponent item : this.dispense)
        if (!item.isEmpty())
          return true;
      return false;
    }

    public VisionPrescriptionDispenseComponent addDispense() { //3
      VisionPrescriptionDispenseComponent t = new VisionPrescriptionDispenseComponent();
      if (this.dispense == null)
        this.dispense = new ArrayList<VisionPrescriptionDispenseComponent>();
      this.dispense.add(t);
      return t;
    }

    public VisionPrescription addDispense(VisionPrescriptionDispenseComponent t) { //3
      if (t == null)
        return this;
      if (this.dispense == null)
        this.dispense = new ArrayList<VisionPrescriptionDispenseComponent>();
      this.dispense.add(t);
      return this;
    }

    /**
     * @return The first repetition of repeating field {@link #dispense}, creating it if it does not already exist
     */
    public VisionPrescriptionDispenseComponent getDispenseFirstRep() { 
      if (getDispense().isEmpty()) {
        addDispense();
      }
      return getDispense().get(0);
    }

      protected void listChildren(List<Property> children) {
        super.listChildren(children);
        children.add(new Property("identifier", "Identifier", "Business identifier which may be used by other parties to reference or identify the prescription.", 0, java.lang.Integer.MAX_VALUE, identifier));
        children.add(new Property("status", "code", "The status of the resource instance.", 0, 1, status));
        children.add(new Property("patient", "Reference(Patient)", "A link to a resource representing the person to whom the vision products will be supplied.", 0, 1, patient));
        children.add(new Property("encounter", "Reference(Encounter)", "A link to a resource that identifies the particular occurrence of contact between patient and health care provider.", 0, 1, encounter));
        children.add(new Property("dateWritten", "dateTime", "The date (and perhaps time) when the prescription was written.", 0, 1, dateWritten));
        children.add(new Property("prescriber", "Reference(Practitioner|PractitionerRole)", "The healthcare professional responsible for authorizing the prescription.", 0, 1, prescriber));
        children.add(new Property("reason[x]", "CodeableConcept|Reference(Condition)", "Can be the reason or the indication for writing the prescription.", 0, 1, reason));
        children.add(new Property("dispense", "", "Deals with details of the dispense part of the supply specification.", 0, java.lang.Integer.MAX_VALUE, dispense));
      }

      @Override
      public Property getNamedProperty(int _hash, String _name, boolean _checkValid) throws FHIRException {
        switch (_hash) {
        case -1618432855: /*identifier*/  return new Property("identifier", "Identifier", "Business identifier which may be used by other parties to reference or identify the prescription.", 0, java.lang.Integer.MAX_VALUE, identifier);
        case -892481550: /*status*/  return new Property("status", "code", "The status of the resource instance.", 0, 1, status);
        case -791418107: /*patient*/  return new Property("patient", "Reference(Patient)", "A link to a resource representing the person to whom the vision products will be supplied.", 0, 1, patient);
        case 1524132147: /*encounter*/  return new Property("encounter", "Reference(Encounter)", "A link to a resource that identifies the particular occurrence of contact between patient and health care provider.", 0, 1, encounter);
        case -1496880759: /*dateWritten*/  return new Property("dateWritten", "dateTime", "The date (and perhaps time) when the prescription was written.", 0, 1, dateWritten);
        case 1430631077: /*prescriber*/  return new Property("prescriber", "Reference(Practitioner|PractitionerRole)", "The healthcare professional responsible for authorizing the prescription.", 0, 1, prescriber);
        case -669418564: /*reason[x]*/  return new Property("reason[x]", "CodeableConcept|Reference(Condition)", "Can be the reason or the indication for writing the prescription.", 0, 1, reason);
        case -934964668: /*reason*/  return new Property("reason[x]", "CodeableConcept|Reference(Condition)", "Can be the reason or the indication for writing the prescription.", 0, 1, reason);
        case -610155331: /*reasonCodeableConcept*/  return new Property("reason[x]", "CodeableConcept|Reference(Condition)", "Can be the reason or the indication for writing the prescription.", 0, 1, reason);
        case -1146218137: /*reasonReference*/  return new Property("reason[x]", "CodeableConcept|Reference(Condition)", "Can be the reason or the indication for writing the prescription.", 0, 1, reason);
        case 284885341: /*dispense*/  return new Property("dispense", "", "Deals with details of the dispense part of the supply specification.", 0, java.lang.Integer.MAX_VALUE, dispense);
        default: return super.getNamedProperty(_hash, _name, _checkValid);
        }

      }

      @Override
      public Base[] getProperty(int hash, String name, boolean checkValid) throws FHIRException {
        switch (hash) {
        case -1618432855: /*identifier*/ return this.identifier == null ? new Base[0] : this.identifier.toArray(new Base[this.identifier.size()]); // Identifier
        case -892481550: /*status*/ return this.status == null ? new Base[0] : new Base[] {this.status}; // Enumeration<VisionStatus>
        case -791418107: /*patient*/ return this.patient == null ? new Base[0] : new Base[] {this.patient}; // Reference
        case 1524132147: /*encounter*/ return this.encounter == null ? new Base[0] : new Base[] {this.encounter}; // Reference
        case -1496880759: /*dateWritten*/ return this.dateWritten == null ? new Base[0] : new Base[] {this.dateWritten}; // DateTimeType
        case 1430631077: /*prescriber*/ return this.prescriber == null ? new Base[0] : new Base[] {this.prescriber}; // Reference
        case -934964668: /*reason*/ return this.reason == null ? new Base[0] : new Base[] {this.reason}; // Type
        case 284885341: /*dispense*/ return this.dispense == null ? new Base[0] : this.dispense.toArray(new Base[this.dispense.size()]); // VisionPrescriptionDispenseComponent
        default: return super.getProperty(hash, name, checkValid);
        }

      }

      @Override
      public Base setProperty(int hash, String name, Base value) throws FHIRException {
        switch (hash) {
        case -1618432855: // identifier
          this.getIdentifier().add(castToIdentifier(value)); // Identifier
          return value;
        case -892481550: // status
          value = new VisionStatusEnumFactory().fromType(castToCode(value));
          this.status = (Enumeration) value; // Enumeration<VisionStatus>
          return value;
        case -791418107: // patient
          this.patient = castToReference(value); // Reference
          return value;
        case 1524132147: // encounter
          this.encounter = castToReference(value); // Reference
          return value;
        case -1496880759: // dateWritten
          this.dateWritten = castToDateTime(value); // DateTimeType
          return value;
        case 1430631077: // prescriber
          this.prescriber = castToReference(value); // Reference
          return value;
        case -934964668: // reason
          this.reason = castToType(value); // Type
          return value;
        case 284885341: // dispense
          this.getDispense().add((VisionPrescriptionDispenseComponent) value); // VisionPrescriptionDispenseComponent
          return value;
        default: return super.setProperty(hash, name, value);
        }

      }

      @Override
      public Base setProperty(String name, Base value) throws FHIRException {
        if (name.equals("identifier")) {
          this.getIdentifier().add(castToIdentifier(value));
        } else if (name.equals("status")) {
          value = new VisionStatusEnumFactory().fromType(castToCode(value));
          this.status = (Enumeration) value; // Enumeration<VisionStatus>
        } else if (name.equals("patient")) {
          this.patient = castToReference(value); // Reference
        } else if (name.equals("encounter")) {
          this.encounter = castToReference(value); // Reference
        } else if (name.equals("dateWritten")) {
          this.dateWritten = castToDateTime(value); // DateTimeType
        } else if (name.equals("prescriber")) {
          this.prescriber = castToReference(value); // Reference
        } else if (name.equals("reason[x]")) {
          this.reason = castToType(value); // Type
        } else if (name.equals("dispense")) {
          this.getDispense().add((VisionPrescriptionDispenseComponent) value);
        } else
          return super.setProperty(name, value);
        return value;
      }

      @Override
      public Base makeProperty(int hash, String name) throws FHIRException {
        switch (hash) {
        case -1618432855:  return addIdentifier(); 
        case -892481550:  return getStatusElement();
        case -791418107:  return getPatient(); 
        case 1524132147:  return getEncounter(); 
        case -1496880759:  return getDateWrittenElement();
        case 1430631077:  return getPrescriber(); 
        case -669418564:  return getReason(); 
        case -934964668:  return getReason(); 
        case 284885341:  return addDispense(); 
        default: return super.makeProperty(hash, name);
        }

      }

      @Override
      public String[] getTypesForProperty(int hash, String name) throws FHIRException {
        switch (hash) {
        case -1618432855: /*identifier*/ return new String[] {"Identifier"};
        case -892481550: /*status*/ return new String[] {"code"};
        case -791418107: /*patient*/ return new String[] {"Reference"};
        case 1524132147: /*encounter*/ return new String[] {"Reference"};
        case -1496880759: /*dateWritten*/ return new String[] {"dateTime"};
        case 1430631077: /*prescriber*/ return new String[] {"Reference"};
        case -934964668: /*reason*/ return new String[] {"CodeableConcept", "Reference"};
        case 284885341: /*dispense*/ return new String[] {};
        default: return super.getTypesForProperty(hash, name);
        }

      }

      @Override
      public Base addChild(String name) throws FHIRException {
        if (name.equals("identifier")) {
          return addIdentifier();
        }
        else if (name.equals("status")) {
          throw new FHIRException("Cannot call addChild on a primitive type VisionPrescription.status");
        }
        else if (name.equals("patient")) {
          this.patient = new Reference();
          return this.patient;
        }
        else if (name.equals("encounter")) {
          this.encounter = new Reference();
          return this.encounter;
        }
        else if (name.equals("dateWritten")) {
          throw new FHIRException("Cannot call addChild on a primitive type VisionPrescription.dateWritten");
        }
        else if (name.equals("prescriber")) {
          this.prescriber = new Reference();
          return this.prescriber;
        }
        else if (name.equals("reasonCodeableConcept")) {
          this.reason = new CodeableConcept();
          return this.reason;
        }
        else if (name.equals("reasonReference")) {
          this.reason = new Reference();
          return this.reason;
        }
        else if (name.equals("dispense")) {
          return addDispense();
        }
        else
          return super.addChild(name);
      }

  public String fhirType() {
    return "VisionPrescription";

  }

      public VisionPrescription copy() {
        VisionPrescription dst = new VisionPrescription();
        copyValues(dst);
        if (identifier != null) {
          dst.identifier = new ArrayList<Identifier>();
          for (Identifier i : identifier)
            dst.identifier.add(i.copy());
        };
        dst.status = status == null ? null : status.copy();
        dst.patient = patient == null ? null : patient.copy();
        dst.encounter = encounter == null ? null : encounter.copy();
        dst.dateWritten = dateWritten == null ? null : dateWritten.copy();
        dst.prescriber = prescriber == null ? null : prescriber.copy();
        dst.reason = reason == null ? null : reason.copy();
        if (dispense != null) {
          dst.dispense = new ArrayList<VisionPrescriptionDispenseComponent>();
          for (VisionPrescriptionDispenseComponent i : dispense)
            dst.dispense.add(i.copy());
        };
        return dst;
      }

      protected VisionPrescription typedCopy() {
        return copy();
      }

      @Override
      public boolean equalsDeep(Base other_) {
        if (!super.equalsDeep(other_))
          return false;
        if (!(other_ instanceof VisionPrescription))
          return false;
        VisionPrescription o = (VisionPrescription) other_;
        return compareDeep(identifier, o.identifier, true) && compareDeep(status, o.status, true) && compareDeep(patient, o.patient, true)
           && compareDeep(encounter, o.encounter, true) && compareDeep(dateWritten, o.dateWritten, true) && compareDeep(prescriber, o.prescriber, true)
           && compareDeep(reason, o.reason, true) && compareDeep(dispense, o.dispense, true);
      }

      @Override
      public boolean equalsShallow(Base other_) {
        if (!super.equalsShallow(other_))
          return false;
        if (!(other_ instanceof VisionPrescription))
          return false;
        VisionPrescription o = (VisionPrescription) other_;
        return compareValues(status, o.status, true) && compareValues(dateWritten, o.dateWritten, true);
      }

      public boolean isEmpty() {
        return super.isEmpty() && ca.uhn.fhir.util.ElementUtil.isEmpty(identifier, status, patient
          , encounter, dateWritten, prescriber, reason, dispense);
      }

  @Override
  public ResourceType getResourceType() {
    return ResourceType.VisionPrescription;
   }

 /**
   * Search parameter: <b>prescriber</b>
   * <p>
   * Description: <b>Who authorizes the vision product</b><br>
   * Type: <b>reference</b><br>
   * Path: <b>VisionPrescription.prescriber</b><br>
   * </p>
   */
  @SearchParamDefinition(name="prescriber", path="VisionPrescription.prescriber", description="Who authorizes the vision product", type="reference", providesMembershipIn={ @ca.uhn.fhir.model.api.annotation.Compartment(name="Practitioner") }, target={Practitioner.class, PractitionerRole.class } )
  public static final String SP_PRESCRIBER = "prescriber";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>prescriber</b>
   * <p>
   * Description: <b>Who authorizes the vision product</b><br>
   * Type: <b>reference</b><br>
   * Path: <b>VisionPrescription.prescriber</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.ReferenceClientParam PRESCRIBER = new ca.uhn.fhir.rest.gclient.ReferenceClientParam(SP_PRESCRIBER);

/**
   * Constant for fluent queries to be used to add include statements. Specifies
   * the path value of "<b>VisionPrescription:prescriber</b>".
   */
  public static final ca.uhn.fhir.model.api.Include INCLUDE_PRESCRIBER = new ca.uhn.fhir.model.api.Include("VisionPrescription:prescriber").toLocked();

 /**
   * Search parameter: <b>identifier</b>
   * <p>
   * Description: <b>Return prescriptions with this external identifier</b><br>
   * Type: <b>token</b><br>
   * Path: <b>VisionPrescription.identifier</b><br>
   * </p>
   */
  @SearchParamDefinition(name="identifier", path="VisionPrescription.identifier", description="Return prescriptions with this external identifier", type="token" )
  public static final String SP_IDENTIFIER = "identifier";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>identifier</b>
   * <p>
   * Description: <b>Return prescriptions with this external identifier</b><br>
   * Type: <b>token</b><br>
   * Path: <b>VisionPrescription.identifier</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.TokenClientParam IDENTIFIER = new ca.uhn.fhir.rest.gclient.TokenClientParam(SP_IDENTIFIER);

 /**
   * Search parameter: <b>patient</b>
   * <p>
   * Description: <b>The identity of a patient to list dispenses for</b><br>
   * Type: <b>reference</b><br>
   * Path: <b>VisionPrescription.patient</b><br>
   * </p>
   */
  @SearchParamDefinition(name="patient", path="VisionPrescription.patient", description="The identity of a patient to list dispenses for", type="reference", providesMembershipIn={ @ca.uhn.fhir.model.api.annotation.Compartment(name="Patient") }, target={Patient.class } )
  public static final String SP_PATIENT = "patient";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>patient</b>
   * <p>
   * Description: <b>The identity of a patient to list dispenses for</b><br>
   * Type: <b>reference</b><br>
   * Path: <b>VisionPrescription.patient</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.ReferenceClientParam PATIENT = new ca.uhn.fhir.rest.gclient.ReferenceClientParam(SP_PATIENT);

/**
   * Constant for fluent queries to be used to add include statements. Specifies
   * the path value of "<b>VisionPrescription:patient</b>".
   */
  public static final ca.uhn.fhir.model.api.Include INCLUDE_PATIENT = new ca.uhn.fhir.model.api.Include("VisionPrescription:patient").toLocked();

 /**
   * Search parameter: <b>datewritten</b>
   * <p>
   * Description: <b>Return prescriptions written on this date</b><br>
   * Type: <b>date</b><br>
   * Path: <b>VisionPrescription.dateWritten</b><br>
   * </p>
   */
  @SearchParamDefinition(name="datewritten", path="VisionPrescription.dateWritten", description="Return prescriptions written on this date", type="date" )
  public static final String SP_DATEWRITTEN = "datewritten";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>datewritten</b>
   * <p>
   * Description: <b>Return prescriptions written on this date</b><br>
   * Type: <b>date</b><br>
   * Path: <b>VisionPrescription.dateWritten</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.DateClientParam DATEWRITTEN = new ca.uhn.fhir.rest.gclient.DateClientParam(SP_DATEWRITTEN);

 /**
   * Search parameter: <b>encounter</b>
   * <p>
   * Description: <b>Return prescriptions with this encounter identifier</b><br>
   * Type: <b>reference</b><br>
   * Path: <b>VisionPrescription.encounter</b><br>
   * </p>
   */
  @SearchParamDefinition(name="encounter", path="VisionPrescription.encounter", description="Return prescriptions with this encounter identifier", type="reference", providesMembershipIn={ @ca.uhn.fhir.model.api.annotation.Compartment(name="Encounter") }, target={Encounter.class } )
  public static final String SP_ENCOUNTER = "encounter";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>encounter</b>
   * <p>
   * Description: <b>Return prescriptions with this encounter identifier</b><br>
   * Type: <b>reference</b><br>
   * Path: <b>VisionPrescription.encounter</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.ReferenceClientParam ENCOUNTER = new ca.uhn.fhir.rest.gclient.ReferenceClientParam(SP_ENCOUNTER);

/**
   * Constant for fluent queries to be used to add include statements. Specifies
   * the path value of "<b>VisionPrescription:encounter</b>".
   */
  public static final ca.uhn.fhir.model.api.Include INCLUDE_ENCOUNTER = new ca.uhn.fhir.model.api.Include("VisionPrescription:encounter").toLocked();

 /**
   * Search parameter: <b>status</b>
   * <p>
   * Description: <b>The status of the vision prescription</b><br>
   * Type: <b>token</b><br>
   * Path: <b>VisionPrescription.status</b><br>
   * </p>
   */
  @SearchParamDefinition(name="status", path="VisionPrescription.status", description="The status of the vision prescription", type="token" )
  public static final String SP_STATUS = "status";
 /**
   * <b>Fluent Client</b> search parameter constant for <b>status</b>
   * <p>
   * Description: <b>The status of the vision prescription</b><br>
   * Type: <b>token</b><br>
   * Path: <b>VisionPrescription.status</b><br>
   * </p>
   */
  public static final ca.uhn.fhir.rest.gclient.TokenClientParam STATUS = new ca.uhn.fhir.rest.gclient.TokenClientParam(SP_STATUS);


}