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
* (enable state, button invocation behaviour)
	 */	
	public void setDownButtonIndex(int downButtonIndex) {
		Assert.isTrue(downButtonIndex < fButtonLabels.length);
		fDownButtonIndex= downButtonIndex;
	}
	
	/**
	 * Sets the viewerSorter.
	 * @param viewerSorter The viewerSorter to set
	 */
	public void setViewerSorter(ViewerSorter viewerSorter) {
		fViewerSorter= viewerSorter;
	}
	
	public void setTableColumns(ColumnsDescription column) {
		fTableColumns= column;
	}
	
	
	
	
	
	private void buttonPressed(int index) {
		if (!managedButtonPressed(index)) {
			fListAdapter.customButtonPressed(this, index);
		}
	}
	
	/**