  def GcstApi(self) -> 'googleapiclient.discovery.Resource':
    """Get a Google Cloud Storage Transfer service object.

    Returns:
      googleapiclient.discovery.Resource: A Google Cloud Storage Transfer
        service object.
    """

    if self.gcst_api_client:
      return self.gcst_api_client
    self.gcst_api_client = common.CreateService(
        'storagetransfer', self.CLOUD_STORAGE_TRANSFER_API_VERSION)
    return self.gcst_api_client
Get a Google Cloud Storage Transfer service object.

Returns:
googleapiclient.discovery.Resource: A Google Cloud Storage Transfer
service object.
libcloudforensics/providers/gcp/internal/storagetransfer.py