changeField.setAccessible(true);
PropertyChangeListener inspectorPropertyChangeListener =
PropertyChangeListener.class.cast(changeField.get(panelInspector));
Mockito.when(mockEvent.getNewValue()).thenReturn(Collections.singleton(view));
inspectorPropertyChangeListener.propertyChange(mockEvent);
Assert.assertNotNull(viewTitle.getTransferHandler());
Mockito.when(mockEvent.getNewValue()).thenReturn(Collections.EMPTY_LIST);
inspectorPropertyChangeListener.propertyChange(mockEvent);