code: func (m *MockECSSDK) RegisterContainerInstance(arg0 *ecs.RegisterContainerInstanceInput) (*ecs.RegisterContainerInstanceOutput, error) {
  	ret := m.ctrl.Call(m, "RegisterContainerInstance", arg0)
  	ret0, _ := ret[0].(*ecs.RegisterContainerInstanceOutput)
  	ret1, _ := ret[1].(error)
  	return ret0, ret1
  }
docs: // RegisterContainerInstance mocks base method