Bug 77598 [nls tooling] NLS hovers / Ctrl+Click not consistent for duplicate keys
20041103 With the following files, the key A.0 is duplicate. - Ctrl + Click: Junps to 'hello' - Hover over "A.0" in class A: shows 'world' public class A { String h= Messages.getString("A.0"); //$NON-NLS-1$ } messages.properties: A.0=hello A.0=world
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
* 
	 */
	private ISelection fForcedMarkOccurrencesSelection;
	/**
	 * 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;
	/** 
	 * This editor's projection support 
	 * @since 3.0
	 */
	private ProjectionSupport fProjectionSupport;
	/** 
	 * This editor's projection model updater 
	 * @since 3.0
	 */
	private IJavaFoldingStructureProvider fProjectionModelUpdater;
	/**
	 * The override and implements indicator manager for this editor.
	 * @since 3.0
	 */
	protected OverrideIndicatorManager fOverrideIndicatorManager;
	/**
	 * Semantic highlighting manager
	 * @since 3.0