Bug 175418 [DataBinding] TreePath moved to internal package
In M5 TreePath moved from org.eclipse.core.databinding.observable.tree.TreePath to org.eclipse.core.internal.databinding.observable.tree.TreePath Non Internal Public interfaces such as: org.eclipse.core.databinding.observable.tree.IOrderedTreeProvider and org.eclipse.core.databinding.observable.tree.IUnorderedTreeProvider depend on this class.
bundles/org.eclipse.jface.databinding/src/org/eclipse/jface/internal/databinding/internal/viewers/UnorderedTreeContentProvider.java
Collections.EMPTY_SET));
			}
		}
		public Object getElementType() {
			return new Object();
		}
		protected void fireSetChange(SetDiff diff) {
			super.fireSetChange(diff);
		}
	}
	KnownElementsSet elements;
	private ITreeViewerListener expandListener = new ITreeViewerListener() {
		public void treeCollapsed(TreeExpansionEvent event) {
		}
		public void treeExpanded(TreeExpansionEvent event) {
		}
	};
	private IPrefetchingTree prefetchingTree;
	private IUnorderedTreeProvider provider;
	private Object pendingNode;
	private int avoidViewerUpdates;
	private TreeViewer treeViewer;
	private int staleCount = 0;
	private boolean useRefresh;
	private int maxPrefetches = -1;
	/**
	 * Constructs a content provider that will render the given tree in a
	 * TreeViewer.
	 * 
	 * @param provider