def METHOD_NAME(project: Optional[pulumi.Input[Optional[str]]] = None,
                                       region: Optional[pulumi.Input[Optional[str]]] = None,
                                       tag_template: Optional[pulumi.Input[str]] = None,
                                       opts: Optional[pulumi.InvokeOptions] = None) -> pulumi.Output[GetTagTemplateIamPolicyResult]:
    """
    Retrieves the current IAM policy data for tagtemplate
    ## example
    ```python
    import pulumi
    import pulumi_gcp as gcp
    policy = gcp.datacatalog.get_tag_template_iam_policy(tag_template=google_data_catalog_tag_template["basic_tag_template"]["name"])
    ```
    :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.
    :param str tag_template: Used to find the parent resource to bind the IAM policy to
    """
    ...