### Question:
MousePanMediatorControlImpl extends AbstractCanvasControl<AbstractCanvas> implements MousePanMediatorControl { @Override protected void doDestroy() { mousePanMediator = null; }  @Override void bind(final DMNSession session); @Override RestrictedMousePanMediator getMousePanMediator();  }### Answer:
@Test public void testDoDestroy() { control.bind(session); control.doDestroy(); assertNull(control.getMousePanMediator()); }