def METHOD_NAME(resource_group_name: Optional[pulumi.Input[str]] = None,
                                 route_filter_name: Optional[pulumi.Input[str]] = None,
                                 rule_name: Optional[pulumi.Input[str]] = None,
                                 opts: Optional[pulumi.InvokeOptions] = None) -> pulumi.Output[GetRouteFilterRuleResult]:
    """
    Gets the specified rule from a route filter.
    :param str resource_group_name: The name of the resource group.
    :param str route_filter_name: The name of the route filter.
    :param str rule_name: The name of the rule.
    """
    ...