module example-versioned-module {
    yang-version 1.1;
    namespace "urn:example:versioned:module";
    prefix "exvermod";

    import ietf-yang-revisions { prefix "rev"; }
    import ietf-yang-semver { prefix "ysv"; }

    description
      "to be completed";

    revision 2017-08-30 {
      description "Backport 'wibble' leaf";
      ysv:version 1.2.2_non_compatible;
    }

    revision 2017-07-30 {
      description "Rename 'baz' to 'bar'";
      ysv:version 1.2.1_non_compatible;
      rev:non-backwards-compatible;
    }

    revision 2017-04-20 {
      description "Add new functionality, leaf 'baz'";
      ysv:version 1.2.0;
    }

    revision 2017-04-03 {
      description "Add new functionality, leaf 'foo'";
      ysv:version 1.1.0;
    }

    revision 2017-02-07 {
      description "First release version.";
      ysv:version 1.0.0;
    }

    // Note: YANG Semver rules do not apply to 0.X.Y labels.
    // The following pre-release revision statements would not
    // appear in any final published version of a module. They
    // are removed when the final version is published.
    // During the pre-release phase of development, only a
    // single one of these revision statements would appear

    // revision 2017-01-30 {
    //   description "NBC changes to initial revision";
    //   ysv:version 0.2.0;
    //   rev:non-backwards-compatible; // optional
    //                         // (theoretically no 
    //                         // 'previous released version')
    // }

    // revision 2017-01-26 {
    //   description "Initial module version";
    //   ysv:version 0.1.0;
    // }

    //YANG module definition starts here
    container example {
      description
        "This is an example container for the 
          example-versioned-module.";
      leaf qux {
        type string;
        description
          "The qux instance of the device.";
      }
      leaf foo {
        type string;
        description
          "The foo instance of the device.";
      }
      leaf bar {
        type uint32;
        description
          "The magnitude of the foo.  This leaf was
           renamed from 'baz'.";
      }
      leaf wibble {
        type boolean;
        description
          "Does it wibble (true) or wobble (false)?";
      }
    }
  }