code: def categories_to_fetch(self, categories_to_fetch):
          
          allowed_values = ["APPENGINE", "BIGQUERY", "BIGTABLE", "CLOUDFUNCTIONS", "CLOUDIOT", "CLOUDSQL", "CLOUDTASKS", "COMPUTE", "CONTAINER", "DATAFLOW", "DATAPROC", "DATASTORE", "FIREBASEDATABASE", "FIREBASEHOSTING", "INTERCONNECT", "LOADBALANCING", "LOGGING", "ML", "MONITORING", "PUBSUB", "REDIS", "ROUTER", "SERVICERUNTIME", "SPANNER", "STORAGE", "TPU", "VPN"]  # noqa: E501
          if not set(categories_to_fetch).issubset(set(allowed_values)):
              raise ValueError(
                  "Invalid values for `categories_to_fetch` [{0}], must be a subset of [{1}]"  # noqa: E501
                  .format(", ".join(map(str, set(categories_to_fetch) - set(allowed_values))),  # noqa: E501
                          ", ".join(map(str, allowed_values)))
              )
  
          self._categories_to_fetch = categories_to_fetch
docs: Sets the categories_to_fetch of this GCPConfiguration.
  
          A list of Google Cloud Platform (GCP) services (such as ComputeEngine, PubSub, etc) from which to pull metrics.  Allowable values are APPENGINE, BIGQUERY, BIGTABLE, CLOUDFUNCTIONS, CLOUDIOT, CLOUDSQL, CLOUDTASKS, COMPUTE, CONTAINER, DATAFLOW, DATASTORE, FIREBASEDATABASE, FIREBASEHOSTING, LOGGING, ML, PUBSUB, ROUTER, SPANNER, STORAGE, VPN  # noqa: E501
  
          :param categories_to_fetch: The categories_to_fetch of this GCPConfiguration.  # noqa: E501
          :type: list[str]