code: def campaign_name(self, campaign_name):
          
          if campaign_name is None:
              raise ValueError("Invalid value for `campaign_name`, must not be `None`")
          if campaign_name is not None and len(campaign_name) > 250:
              raise ValueError("Invalid value for `campaign_name`, length must be less than or equal to `250`")
          if campaign_name is not None and len(campaign_name) < 1:
              raise ValueError("Invalid value for `campaign_name`, length must be greater than or equal to `1`")
  
          self._campaign_name = campaign_name
docs: Sets the campaign_name of this ServicePackageQuotaHistoryReservation.
          Textual campaign name for this reservation.
  
          :param campaign_name: The campaign_name of this ServicePackageQuotaHistoryReservation.
          :type: str