Bug 315281 update copyrights for 3.6
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/AbstractTreeViewer.java
for (int i = 0; i < elementsOrPaths.length; ++i) {
			Object element = elementsOrPaths[i];
			if (equals(element, input)) {
				setInput(null);
				return;
			}
			Widget[] childItems = internalFindItems(element);
			if (childItems.length > 0) {
				for (int j = 0; j < childItems.length; j++) {
					Widget childItem = childItems[j];
					if (childItem instanceof Item) {
						disassociate((Item) childItem);
						childItem.dispose();
					}
				}
			} else {
				
				Object parent = getParentElement(element);
				if (parent != null
						&& !equals(parent, getRoot())
						&& !(parent instanceof TreePath && ((TreePath) parent)
								.getSegmentCount() == 0)) {
					Widget[] parentItems = internalFindItems(parent);
					for (int j = 0; j < parentItems.length; j++) {
						Widget parentItem = parentItems[j];
						if (parentItem instanceof Item) {
							updatePlus((Item) parentItem, parent);
						}
					}
				}