code: func (l *Label) Validate() error {
  	if !l.ResourceID.Valid() {
  		return &Error{
  			Code: EInvalid,
  			Msg:  "resourceID is required",
  		}
  	}
  
  	if l.Name == "" {
  		return &Error{
  			Code: EInvalid,
  			Msg:  "label name is required",
  		}
  	}
  
  	return nil
  }
docs: // Validate returns an error if the label is invalid.