-8:
  https://thrift.apache.org/docs/types
The offsets are character-based, not byte-based - a character with a
three-byte UTF-8 representation only counts as one character.

NOTE: This span represents a best guess, or 'provenance':
it cannot be guaranteed that this text span matches the _exact_
text of the original document, but is the annotation's best
effort at such a representation.
</pre>
    <br/>
   </div>
   <div class="definition">
    <h3 id="Struct_AudioSpan">
     Struct: AudioSpan
    </h3>
   