module file-test1-a {
    yang-version 1;
    namespace
      "http://test1.org/ns/file/a";
    prefix t1fa;

    revision "2009-11-21" {
      description
        "sample module in progress.";
    }

    identity id1;

    identity id2 {
       base "id1";
    }

    identity id3 {
       base "id1";
    }
}