def METHOD_NAME(authorization_name: Optional[str] = None,
                                            circuit_name: Optional[str] = None,
                                            resource_group_name: Optional[str] = None,
                                            opts: Optional[pulumi.InvokeOptions] = None) -> AwaitableGetExpressRouteCircuitAuthorizationResult:
    """
    Gets the specified authorization from the specified express route circuit.
    :param str authorization_name: The name of the authorization.
    :param str circuit_name: The name of the express route circuit.
    :param str resource_group_name: The name of the resource group.
    """
    __args__ = dict()
    __args__['authorizationName'] = authorization_name
    __args__['circuitName'] = circuit_name
    __args__['resourceGroupName'] = resource_group_name
    opts = pulumi.InvokeOptions.merge(_utilities.get_invoke_opts_defaults(), opts)
    __ret__ = pulumi.runtime.invoke('azure-native:network/v20230501:getExpressRouteCircuitAuthorization', __args__, opts=opts, typ=GetExpressRouteCircuitAuthorizationResult).value
    return AwaitableGetExpressRouteCircuitAuthorizationResult(
        authorization_key=pulumi.get(__ret__, 'authorization_key'),
        authorization_use_status=pulumi.get(__ret__, 'authorization_use_status'),
        etag=pulumi.get(__ret__, 'etag'),
        id=pulumi.get(__ret__, 'id'),
        name=pulumi.get(__ret__, 'name'),
        provisioning_state=pulumi.get(__ret__, 'provisioning_state'),
        type=pulumi.get(__ret__, 'type'))