Bug 166600 [DataBinding] Refactor tests to be in the correct packages
tests/org.eclipse.jface.tests.databinding/src/org/eclipse/jface/tests/internal/databinding/internal/observable/UnmodifiableObservableListTest.java
int count;
		IObservable source;
		
		public void handleStale(StaleEvent event) {
			count++;
			this.source = event.getObservable();
		}
	}
	
	private static class ChangeCounter implements IChangeListener {
		int count;
		IObservable source;
		public void handleChange(ChangeEvent event) {
			count++;
			this.source = event.getObservable();
		}
	}
	
	private static class ListChangeCounter implements IListChangeListener {
		int count;
		IObservableList source;
		ListDiff diff;
		public void handleListChange(ListChangeEvent event) {
			count++;
			this.source = event.getObservableList();
			this.diff = event.diff;
		}
	}
	
	private static class MutableObservableList extends ObservableList {