module ident-aug-must-issue-aps {

  namespace "urn:ident-aug-must-issue:aps";

  prefix aps;

  import ident-aug-must-issue-ape {

    prefix ape;

  }

  identity alarm {

  }

  identity alarm-X {

    base alarm;

  }

  augment "/ape:entities/ape:entity" {

      container sensor {

      }

  }

  notification alarm-1 {

    leaf alarm-id {

      must ".= 'aps:alarm-X'";

      type identityref {

        base alarm;

      }

    }

  }

}