Bug 161425 [Viewers] TableTreeViewer => EditingSupport broken
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/TableTreeViewer.java
* identify the column in a cell modifier.
	 * 
	 * @param columnProperties
	 *            the list of column properties
	 */
	public void setColumnProperties(String[] columnProperties) {
		tableEditorImpl.setColumnProperties(columnProperties);
	}
	/*
	 * (non-Javadoc) Method declared in AbstractTreeViewer.
	 */
	protected void setExpanded(Item node, boolean expand) {
		((TableTreeItem) node).setExpanded(expand);
	}
	/*
	 * (non-Javadoc) Method declared in AbstractTreeViewer.
	 */
	protected void setSelection(List items) {
		TableTreeItem[] newItems = new TableTreeItem[items.size()];
		items.toArray(newItems);
		getTableTree().setSelection(newItems);
	}
	/*
	 * (non-Javadoc) Method declared in AbstractTreeViewer.
	 */
	protected void showItem(Item item) {
		getTableTree().showItem((TableTreeItem) item);
	}
}