Bug 141192 [Viewers] Javadoc change about multiple equal elements in StructuredViewer and AbstractTreeViewer
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/AbstractTreeViewer.java
*           the elements to remove
     * @since 3.1
     */
    protected void internalRemove(Object parent, Object[] elements) {
    	
    	CustomHashtable toRemove = new CustomHashtable(getComparer());
    	for (int i = 0; i < elements.length; i++) {
			toRemove.put(elements[i], elements[i]);
		}
        
        
        CustomHashtable parentItems = new CustomHashtable(5);
        
    	Widget[] parentItemArray = findItems(parent);
        for (int i = 0; i < parentItemArray.length; i++) {
        	Widget parentItem = parentItemArray[i];
        	
        	if (parentItem instanceof Item) {
        		parentItems.put(parentItem, parentItem);
        	}
        	
        	
        	Item[] children = getChildren(parentItem);
        	
        	for (int j = 0; j < children.length; j++) {
				Item child = children[j];
				
		        Object data = child.getData();
		        if (data !=null && toRemove.containsKey(data)) {
					disassociate(child);