TreeItem topItem = createTopTreeItem( tree, TREE_ITEM_NATIVE_OBJECTS );
TreeItem topItem = createTopTreeItem( tree, TREE_ITEM_BIRT_OBJECTS );
	public void createBirtObjectsTree( )	{		Assert.isNotNull( tree );		TreeItem topItem = createTopTreeItem( tree, TREE_ITEM_NATIVE_OBJECTS );		createObjects( topItem, OBJECTS_TYPE_BIRT );	}