def tlv_string_xml() -> str:
    """Return the XML data for the test tree as str."""
    return """<Tlv>
  <Element Tag="0xE1">
    <Primitive Tag="0x9F1E" Type="ASCII">16021437</Primitive>
    <Element Tag="0xEF">
      <Primitive Tag="0xDF0D" Type="ASCII">M000-MPI</Primitive>
      <Primitive Tag="0xDF7F" Type="ASCII">1-22</Primitive>
    </Element>
    <Element Tag="0xEF">
      <Primitive Tag="0xDF0D" Type="ASCII">M000-TESTOS</Primitive>
      <Primitive Tag="0xDF7F" Type="ASCII">6-5</Primitive>
    </Element>
  </Element>
</Tlv>"""