Inheritance: extends ClientTraitStub, use trait Google\Cloud\ClientTrait
 /**
  * @expectedException Google\Cloud\Exception\GoogleException
  */
 public function testDetectProjectIdOnGceButOhNoThereStillIsntAProjectId()
 {
     $projectId = null;
     $m = $this->prophesize(Metadata::class);
     $m->getProjectId()->willReturn($projectId)->shouldBeCalled();
     $trait = new ClientTraitStubOnGce($m);
     $res = $trait->runDetectProjectId([]);
 }