Bug 126061 [Viewers] Need to document that virtual tables and trees ignore sorters and filters
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/TreeViewer.java
* @since 3.1
	 */
	public CellEditor[] getCellEditors() {
		return treeViewerImpl.getCellEditors();
	}
	/**
	 * Returns the cell modifier of this tree viewer.
	 * 
	 * @return the cell modifier
	 * @since 3.1
	 */
	public ICellModifier getCellModifier() {
		return treeViewerImpl.getCellModifier();
	}
	/*
	 * (non-Javadoc) Method declared in AbstractTreeViewer.
	 */
	protected Item[] getChildren(Widget o) {
		if (o instanceof TreeItem) {
			return ((TreeItem) o).getItems();
		}
		if (o instanceof Tree) {
			return ((Tree) o).getItems();
		}
		return null;
	}
	/**
	 * Returns the column properties of this tree viewer. The properties must
	 * correspond with the columns of the tree control. They are used to
	 * identify the column in a cell modifier.