Bug 240363 [Viewers] [open type] Problem with Open Type filtering
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/AbstractTableViewer.java
*
	 * @exception IllegalArgumentException -
	 *                if the index is not between 0 and the number of elements
	 *                in the list minus 1 (inclusive)
	 *
	 * @see SWT#VIRTUAL
	 * @see SWT#SetData
	 *
	 * @since 3.3
	 */
	protected abstract void doClear(int index);
	/**
	 * Selects the items at the given zero-relative indices in the receiver.
	 * The current selection is not cleared before the new items are selected.
	 * <p>
	 * If the item at a given index is not selected, it is selected.
	 * If the item at a given index was already selected, it remains selected.
	 * Indices that are out of range and duplicate indices are ignored.
	 * If the receiver is single-select and multiple indices are specified,
	 * then all indices are ignored.
	 * </p>
	 *
	 * @param indices the array of indices for the items to select
	 *
	 * @exception IllegalArgumentException - if the array of indices is null
	 *
	 */
	protected abstract void doSelect(int[] indices);
}