Bug 117965 [DataBinding] Change tests plugin to pre-req examples
This will allow the UI tests in examples to make use of the pojo model
tests/org.eclipse.jface.tests.databinding/src/org/eclipse/jface/tests/databinding/scenarios/TreeScenarios.java
secondCol = new TreeColumn(tree, SWT.NONE);
		secondCol.setWidth(100);
		tviewer = new TreeViewer(tree);
		
		catalog = SampleData.CATALOG_2005; 
			
		catalogModelTree = SampleData.CATALOG_TREE;
		
		
		
		
		directoryModelTree = new ITree() {					
			private ITree.ChangeSupport changeSupport = null;			
			private Object[] rootObjects = Collections.EMPTY_LIST.toArray();
			public Class[] getTypes() {
				return new Class[] { File.class } ;
			}
		
			public boolean hasChildren(Object element) {
				return ((File)element).isDirectory();
			}
		
			public void setChildren(Object parentElement, Object[] children) {
				
				Object old;
				if (parentElement==null) {
					old = rootObjects;
					rootObjects = children==null?Collections.EMPTY_LIST.toArray():children;
				}
				else {