Bug 141192 [Viewers] Javadoc change about multiple equal elements in StructuredViewer and AbstractTreeViewer
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/StructuredViewer.java
* Notifies any double-click listeners that a double-click has been
	 * received. Only listeners registered at the time this method is called are
	 * notified.
	 * 
	 * @param event
	 *            a double-click event
	 * 
	 * @see IDoubleClickListener#doubleClick
	 */
	protected void fireDoubleClick(final DoubleClickEvent event) {
		Object[] listeners = doubleClickListeners.getListeners();
		for (int i = 0; i < listeners.length; ++i) {
			final IDoubleClickListener l = (IDoubleClickListener) listeners[i];
			SafeRunnable.run(new SafeRunnable() {
				public void run() {
					l.doubleClick(event);
				}
			});
		}
	}
	/**
	 * Notifies any open event listeners that a open event has been received.
	 * Only listeners registered at the time this method is called are notified.
	 * 
	 * @param event
	 *            a double-click event
	 * 
	 * @see IOpenListener#open(OpenEvent)
	 */
	protected void fireOpen(final OpenEvent event) {