@Override
 public FinishApplicationMasterResponse finishApplicationMaster(
     FinishApplicationMasterRequest request) throws YarnException, IOException {
   return mockRM.finishApplicationMaster(request);
 }
 @Override
 public AllocateResponse allocate(AllocateRequest request) throws YarnException, IOException {
   return mockRM.allocate(request);
 }
 @Override
 public RegisterApplicationMasterResponse registerApplicationMaster(
     RegisterApplicationMasterRequest request) throws YarnException, IOException {
   return mockRM.registerApplicationMaster(request);
 }