def METHOD_NAME(management_group_id: Optional[pulumi.Input[str]] = None,
                                                     policy_definition_name: Optional[pulumi.Input[str]] = None,
                                                     opts: Optional[pulumi.InvokeOptions] = None) -> pulumi.Output[GetPolicyDefinitionAtManagementGroupResult]:
    """
    This operation retrieves the policy definition in the given management group with the given name.
    :param str management_group_id: The ID of the management group.
    :param str policy_definition_name: The name of the policy definition to get.
    """
    ...