code: func (mr *MockMathMockRecorder) Sum(arg0, arg1 interface{}) *gomock.Call {
  	mr.mock.ctrl.T.Helper()
  	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Sum", reflect.TypeOf((*MockMath)(nil).Sum), arg0, arg1)
  }
docs: // Sum indicates an expected call of Sum