code: func (a *Execution_Auth) Normalize() error {
  	if a == nil {
  		return errors.New("Execution_Auth is nil")
  	}
  	if a.Id == nil {
  		return errors.New("Execution_Auth.Id is nil")
  	}
  	return nil
  }
docs: // Normalize returns an error iff the Execution_Auth has invalid form (e.g.
  // contains nils).