Bug 159550 [Viewers] Deprecate TableTreeViewer
The underlying SWT-controls of TableTreeViewer (TableTree,TableTreeItem,TableTreeEditor) are deprecated and so should TableTreeViewer I think.
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/TableTreeViewer.java
*
     * @param element the element
     * @param column the column number
     */
    public void editElement(Object element, int column) {
        tableViewerImpl.editElement(element, column);
    }
    /**
     * Returns the cell editors of this viewer.
     *
     * @return the list of cell editors
     */
    public CellEditor[] getCellEditors() {
        return tableViewerImpl.getCellEditors();
    }
    /**
     * Returns the cell modifier of this viewer.
     *
     * @return the cell modifier
     */
    public ICellModifier getCellModifier() {
        return tableViewerImpl.getCellModifier();
    }
    /* (non-Javadoc)
     * Method declared on AbstractTreeViewer.
     */
    protected Item[] getChildren(Widget o) {
        if (o instanceof TableTreeItem) {
			return ((TableTreeItem) o).getItems();
		}