Bug 141192 [Viewers] Javadoc change about multiple equal elements in StructuredViewer and AbstractTreeViewer
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/StructuredViewer.java
Control control = getControl();
		if (control != null && !control.isDisposed()) {
			
			
			
			
			ISelection selection;
			if (event.item != null && event.item.getData() != null) {
				selection = new StructuredSelection(event.item.getData());
			}
			else {
				selection = getSelection();
				updateSelection(selection);
			}
			fireDoubleClick(new DoubleClickEvent(this, selection));
		}
	}
	/**
	 * Handles an open event from the OpenStrategy.
	 * <p>
	 * This method is internal to the framework; subclassers should not call
	 * this method.
	 * </p>
	 * 
	 * @param event
	 *            the SWT selection event
	 */