docs: def update_flag(self, state: str, feature_key: str) \
          -> launchdarkly_api.FeatureFlag:
          """
          Update the flag status for the specified feature flag.
  
          :param state: New feature flag state
          :param featureKey: Feature flag key
  
          :returns: FeatureFlag object.
          """
          build_env = "/environments/" + self.environment_key + "/on"
          patch_comment = [{"op": "replace", "path": build_env, "value": state}]
  
          try:
              resp = self.feature.patch_feature_flag(
                  self.project_key, feature_key, patch_comment)
          except launchdarkly_api.rest.ApiException as ex:
              msg = "Unable to update flag."
              resp = "API response was {0} {1}.".format(ex.status, ex.reason)
              LOG.error("%s %s", msg, resp)
              sys.exit(1)
  
          return resp