xmlns="urn:ietf:params:xml:ns:yang:yin:1"

        xmlns:b="urn:example:b">

  <yang-version value="1.1"/>

  <namespace uri="urn:example:b"/>

  <prefix value="b"/>

  <revision date="2015-01-01"/>

  <typedef name="myenum">

    <type name="enumeration">

      <enum name="zero"/>

    </type>

  </typedef>

  <container name="x"/>

</module>