Bug 141192 [Viewers] Javadoc change about multiple equal elements in StructuredViewer and AbstractTreeViewer
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/AbstractTreeViewer.java
internalCollectVisibleExpanded(v, getControl());
        return v.toArray();
    }
    private void internalCollectVisibleExpanded(ArrayList result, Widget widget) {
        Item[] items = getChildren(widget);
        for (int i = 0; i < items.length; i++) {
            Item item = items[i];
            if (getExpanded(item)) {
                Object data = item.getData();
                if (data != null) {
					result.add(data);
				}
                
                
                internalCollectVisibleExpanded(result, item);
            }
        }
    }
    /**
     * Returns the tree path for the given item.
     *  
     * @since 3.2
     */
    protected TreePath getTreePathFromItem(Item item) {
		LinkedList segments = new LinkedList();
		while(item!=null) {
			Object segment = item.getData();
			Assert.isNotNull(segment);
			segments.addFirst(segment);
			item = getParentItem(item);