SchedulerTask canceling.true if this embedding contains given offset related
to top level source.Embedding from a list of embeddings.Source instance for a file.Source instance for a file.Source instance for a Document.Source instance for a Document.CancelSupport.SchedulerTasks for a Snapshot.Parser.Snapshot of the contents of this Source.Scheduler reschedules all tasks when:
current document is changed (file opened, closed, editor tab switched),
text in the current document is changed,
cusor position is changed