code: def health_indicator(self, health_indicator):
          
          allowed_values = ["ok", "warning", "error"]
          if health_indicator not in allowed_values:
              raise ValueError(
                  "Invalid value for `health_indicator` ({0}), must be one of {1}"
                  .format(health_indicator, allowed_values)
              )
  
          self._health_indicator = health_indicator
docs: Sets the health_indicator of this UpdateCampaign.
          An indication to the condition of the campaign.
  
          :param health_indicator: The health_indicator of this UpdateCampaign.
          :type: str