Bug 27075 ViewerSorter could maybe lazily initialize Collator
calling JavaElementSorter creates a lot of new objects (ViewerSorter calls Collator.getInstance() which is the culprit) so maybe fSorter could be initialized lazily
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/dialogfields/ListDialogField.java
* Checks if the button pressed is handled internally
	 * @return Returns true if button has been handled.
	 */
	protected boolean managedButtonPressed(int index) {
		if (index == fRemoveButtonIndex) {
			remove();
		} else if (index == fUpButtonIndex) {
			up();
		} else if (index == fDownButtonIndex) {
			down();
		} else {
			return false;
		}
		return true;
	}
	
	
	
	/*
	 * @see DialogField#doFillIntoGrid
	 */
	public Control[] doFillIntoGrid(Composite parent, int nColumns) {
		PixelConverter converter= new PixelConverter(parent);
		
		assertEnoughColumns(nColumns);
		
		Label label= getLabelControl(parent);
		GridData gd= gridDataForLabel(1);
		gd.verticalAlignment= GridData.BEGINNING;
		label.setLayoutData(gd);