code: func (m *MockEC2MetadataClient) DefaultCredentials() (*ec2.RoleCredentials, error) {
  	ret := m.ctrl.Call(m, "DefaultCredentials")
  	ret0, _ := ret[0].(*ec2.RoleCredentials)
  	ret1, _ := ret[1].(error)
  	return ret0, ret1
  }
docs: // DefaultCredentials mocks base method