Bug 156883 [Viewers] enhancements to ILazyTreeContentProvider
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/AbstractTreeViewer.java
item.setText("");
					}
				}
			}
		}
		for (int i = 0; i < min; ++i) {
			Item item = items[i];
			Object newElement = elementChildren[i];
			if (item.getData() == null) {
				
				associate(newElement, item);
				updatePlus(item, newElement);
				updateItem(item, newElement);
			} else {
				
				updatePlus(item, newElement);
				if (updateLabels) {
					updateItem(item, newElement);
				}
			}
		}
		
		
		
		
		
		
		for (int i = 0; i < min; ++i) {
			Item item = items[i];
			Object newElement = elementChildren[i];