@Test
public void testTraverseGraphByObjectSearchCallsDelegate() throws Exception {

  TraverseGraphDelegate delegate = mock(TraverseGraphDelegate.class);
  when(delegateProvider.get(TraverseGraphDelegate.class)).thenReturn(delegate);
  TraverseByObjectSearchRequest request = new TraverseByObjectSearchRequest();
  service.traverseGraph(RequestHeader.builder().build(), request);
  verify(delegate).handle(request);
}