<?xml version="1.0" encoding="UTF-8"?>
<tsduck>
  <_descriptors>

    <supplementary_audio_descriptor
        mix_type="uint1, required"
        editorial_classification="uint5, required"
        language_code="char3, optional">
      <private_data>
        Hexadecimal content
      </private_data>
    </supplementary_audio_descriptor>

  </_descriptors>
</tsduck>
