Bug 3959 Dupilcate entry in save before copy dialog (1GF9IYY)
Open two java perspectives in two windows. Open the same .java file in both perspectives Change the contents of the file but do not save Select copy from the file's popup menu Note that in the dialog that appears the file is listed twice. NOTES:
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/JavaPlugin.java
return fClassFileDocumentProvider;
	}
	public IWorkingCopyManager getWorkingCopyManager() {
		return getCompilationUnitDocumentProvider();
	}
	
	public ProblemMarkerManager getProblemMarkerManager() {
		if (fProblemMarkerManager == null)
			fProblemMarkerManager= new ProblemMarkerManager();
		return fProblemMarkerManager;
	}	
	
	public JavaTextTools getJavaTextTools() {
		if (fJavaTextTools == null)
			fJavaTextTools= new JavaTextTools(getPreferenceStore());
		return fJavaTextTools;
	}
		
	/**
	 * Creates the Java plugin standard groups in a context menu.
	 */
	public static void createStandardGroups(IMenuManager menu) {
		if (!menu.isEmpty())
			return;
			
		menu.add(new Separator(IContextMenuConstants.GROUP_NEW));
		menu.add(new GroupMarker(IContextMenuConstants.GROUP_GOTO));
		menu.add(new GroupMarker(IContextMenuConstants.GROUP_OPEN));
		menu.add(new Separator(IContextMenuConstants.GROUP_SHOW));
		menu.add(new Separator(IContextMenuConstants.GROUP_BUILD));