code: func (r Scale_Policy_Trigger_Repeating) ValidateCronExpression(expression *string) (err error) {
  	var resp datatypes.Void
  	params := []interface{}{
  		expression,
  	}
  	err = r.Session.DoRequest("SoftLayer_Scale_Policy_Trigger_Repeating", "validateCronExpression", params, &r.Options, &resp)
  	return
  }
docs: // no documentation yet