def METHOD_NAME(project: Optional[str] = None,
                                       web_backend_service: Optional[str] = None,
                                       opts: Optional[pulumi.InvokeOptions] = None) -> AwaitableGetWebBackendServiceIamPolicyResult:
    """
    Retrieves the current IAM policy data for webbackendservice
    ## example
    ```python
    import pulumi
    import pulumi_gcp as gcp
    policy = gcp.iap.get_web_backend_service_iam_policy(project=google_compute_backend_service["default"]["project"],
        web_backend_service=google_compute_backend_service["default"]["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 web_backend_service: Used to find the parent resource to bind the IAM policy to
    """
    __args__ = dict()
    __args__['project'] = project
    __args__['webBackendService'] = web_backend_service
    opts = pulumi.InvokeOptions.merge(_utilities.get_invoke_opts_defaults(), opts)
    __ret__ = pulumi.runtime.invoke('gcp:iap/getWebBackendServiceIamPolicy:getWebBackendServiceIamPolicy', __args__, opts=opts, typ=GetWebBackendServiceIamPolicyResult).value
    return AwaitableGetWebBackendServiceIamPolicyResult(
        etag=pulumi.get(__ret__, 'etag'),
        id=pulumi.get(__ret__, 'id'),
        policy_data=pulumi.get(__ret__, 'policy_data'),
        project=pulumi.get(__ret__, 'project'),
        web_backend_service=pulumi.get(__ret__, 'web_backend_service'))