code: func (e *ErrMissingPluralTranslation) Error() string {
  
  	if _, ok := e.key.(string); !ok {
  		return fmt.Sprintf("error: missing '%s' plural rule '%s' for translation with key '%#v' and locale '%s'", e.translationType, e.rule, e.key, e.locale)
  	}
  
  	return fmt.Sprintf("error: missing '%s' plural rule '%s' for translation with key '%s' and locale '%s'", e.translationType, e.rule, e.key, e.locale)
  }
docs: // Error returns ErrMissingPluralTranslation's internal error text