def METHOD_NAME(backup_policy_name: Optional[pulumi.Input[str]] = None,
                             resource_group_name: Optional[pulumi.Input[str]] = None,
                             vault_name: Optional[pulumi.Input[str]] = None,
                             opts: Optional[pulumi.InvokeOptions] = None) -> pulumi.Output[GetBackupPolicyResult]:
    """
    Gets a backup policy belonging to a backup vault
    :param str resource_group_name: The name of the resource group. The name is case insensitive.
    :param str vault_name: The name of the backup vault.
    """
    ...