Bug 37567 Remove automatic forward linking
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/packageview/PackageExplorerPart.java
refreshViewer= true;
		} else if (PreferenceConstants.APPEARANCE_MEMBER_SORT_ORDER.equals(event.getProperty())) {
			refreshViewer= true;
		}
		if (refreshViewer)
			fViewer.refresh();
	}
	
	/* (non-Javadoc)
	 * @see IViewPartInputProvider#getViewPartInput()
	 */
	public Object getViewPartInput() {
		if (fViewer != null) {
			return fViewer.getInput();
		}
		return null;
	}
	public void collapseAll() {
		fViewer.getControl().setRedraw(false);		
		fViewer.collapseToLevel(getViewPartInput(), TreeViewer.ALL_LEVELS);
		fViewer.getControl().setRedraw(true);
	}
	
	public PackageExplorerPart() { 
		initLinkingEnabled();
	}
	public boolean show(ShowInContext context) {
		Object input= context.getInput();
		if (input instanceof IEditorInput) {
			Object elementOfInput= getElementOfInput((IEditorInput)context.getInput());