Bug 127861 [DataBinding] Mark API provisional
tests/org.eclipse.jface.tests.databinding/src/org/eclipse/jface/databinding/SelectionAwareUpdatableCollectionTest.java
public int addElement(Object value, int index) {
			elements.add(index, value);
			return index;
		}
		public Object computeElement(int index) {
			return elements.get(index);
		}
		public Class getElementType() {
			return Object.class;
		}
		public int computeSize() {
			return elements.size();
		}
		public void removeElement(int index) {
			elements.remove(index);
		}
		public void setElement(int index, Object value) {
			elements.set(index, value);
		}
		public Object getSelectedObject() {
			return selected;
		}
		public void setSelectedObject(Object object) {
			this.selected = object;
		}
		
		
	}
}