code: func (_m *Marathon) CreateGroup(group *marathon.Group) error {
  	ret := _m.Called(group)
  
  	var r0 error
  	if rf, ok := ret.Get(0).(func(*marathon.Group) error); ok {
  		r0 = rf(group)
  	} else {
  		r0 = ret.Error(0)
  	}
  
  	return r0
  }
docs: // CreateGroup provides a mock function with given fields: group