def __init__()

in common/data_mesh/src/data_mesh_client.py [0:0]


    def __init__(self,
                 location: str,
                 overwrite: bool = False,
                 bq_client=cortex_bq_client.CortexBQClient(),
                 bq_datapolicy_client=(
                     bigquery_datapolicies_v1.DataPolicyServiceClient()),
                 catalog_client=datacatalog_v1.DataCatalogClient(),
                 policy_tag_client=datacatalog_v1.PolicyTagManagerClient(),
                 dataplex_client=dataplex_v1.DataplexServiceClient(),
                 retry_timeout: float = _RETRY_TIMEOUT_SEC):
        """Initializes a client for the given project & location.

        Args:
            project: String representing the GCP project id.
            location: String representing the location where the data in the
                mesh is stored. This value should match the location field in
                Cortex config.json.
            overwrite: Boolean indicating whether existing resources and
                annotations should be overwritten.
            bq_datapolicy_client: BigQuery data policy client.
            catalog_client: Data Catalog client.
            policy_tag_client: Data Catalog policy tag client.
            dataplex_client: Dataplex client, which still behaves asynchronously
                for some long running requests which return ops.
            retry_timeout: Float specifying the timeout duration in seconds for
                API request retries. Sets google.api_core.retry.Retry.timeout on
                requests that create operations, and also sets the timeout and
                retry for polling the operation results.
        """

        self._location = location
        self.overwrite = overwrite

        self._bq_client = bq_client
        self._bq_datapolicy_client = bq_datapolicy_client
        self._catalog_client = catalog_client
        self._policy_tag_client = policy_tag_client
        self._dataplex_client = dataplex_client

        self._retry_timeout = retry_timeout
        self._retry_options = retry.Retry(timeout=retry_timeout)

        # Dictionary of {display_name: unique_name} containing existing tag
        # templates, which is populated before annotating BQ assets.
        self._existing_tag_templates: Optional[Dict[str, str]] = None