def METHOD_NAME(connection_id: Optional[pulumi.Input[str]] = None,
                                     location: Optional[pulumi.Input[Optional[str]]] = None,
                                     project: Optional[pulumi.Input[Optional[str]]] = None,
                                     opts: Optional[pulumi.InvokeOptions] = None) -> pulumi.Output[GetConnectionIamPolicyResult]:
    """
    Retrieves the current IAM policy data for connection
    ## example
    ```python
    import pulumi
    import pulumi_gcp as gcp
    policy = gcp.bigquery.get_connection_iam_policy(project=google_bigquery_connection["connection"]["project"],
        location=google_bigquery_connection["connection"]["location"],
        connection_id=google_bigquery_connection["connection"]["connection_id"])
    ```
    :param str connection_id: Optional connection id that should be assigned to the created connection.
           Used to find the parent resource to bind the IAM policy to
    :param str location: The geographic location where the connection should reside.
           Cloud SQL instance must be in the same location as the connection
           with following exceptions: Cloud SQL us-central1 maps to BigQuery US, Cloud SQL europe-west1 maps to BigQuery EU.
           Examples: US, EU, asia-northeast1, us-central1, europe-west1.
           Spanner Connections same as spanner region
           AWS allowed regions are aws-us-east-1
           Azure allowed regions are azure-eastus2 Used to find the parent resource to bind the IAM policy to
    :param str project: The ID of the project in which the resource belongs.
           If it is not provided, the project will be parsed from the identifier of the parent resource. If no project is provided in the parent identifier and no project is specified, the provider project is used.
    """
    ...