Bug 65268 [projection] editor is missing collapse all action for code folding
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
*/
	private boolean fMarkImplementors;
	/**
	 * The selection used when forcing occurrence marking
	 * through code.
	 * @since 3.0
	 */
	private ISelection fForcedMarkOccurrencesSelection;
	/**
	 * The document modification stamp at the time when the last
	 * occurrence marking took place.
	 * @since 3.1
	 */
	private long fMarkOccurrenceModificationStamp= IDocumentExtension4.UNKNOWN_MODIFICATION_STAMP;
	/**
	 * The region of the word under the caret used to when
	 * computing the current occurrence markings.
	 * @since 3.1
	 */
	private IRegion fMarkOccurrenceTargetRegion;
	/**
	 * The internal shell activation listener for updating occurrences.
	 * @since 3.0
	 */
	private ActivationListener fActivationListener= new ActivationListener();
	private ISelectionListenerWithAST fPostSelectionListenerWithAST;
	private OccurrencesFinderJob fOccurrencesFinderJob;
	
	private OccurrencesFinderJobCanceler fOccurrencesFinderJobCanceler;
	/**