Bug 166600 [DataBinding] Refactor tests to be in the correct packages
tests/org.eclipse.jface.tests.databinding/src/org/eclipse/jface/tests/databinding/observable/value/AbstractObservableValueTest.java
ObservableValueStub() {
			super(Realm.getDefault());
		}
		private ObservableValueStub(Realm realm) {
			super(realm);
		}
		protected Object doGetValue() {
			return null;
		}
		public Object getValueType() {
			return null;
		}
		protected void fireValueChange(ValueDiff diff) {
			super.fireValueChange(diff);
		}
	}
}