<sub-class-of type="application/x-matroska"/>
    <glob pattern="*.webm" />
  </mime-type>

  <mime-type type="x-conference/x-cooltalk">
    <_comment>Cooltalk Audio</_comment>
    <glob pattern="*.ice"/>
  </mime-type>

  <mime-type type="application/x-fictionbook+xml">
      <_comment>FictionBook document</_comment>
      <sub-class-of type="application/xml"/>