his, you need to run the protocol buffer compiler <code>protoc</code> on your <code>.proto</code>:</p>
<ol>
  <li>If you haven’t installed this yet, now is the time. Your operating system’s  package manager very likely already provides a version for you – search  there first. If not, you can <a href="https://developers.google.com/protocol-buffers/docs/downloads.html">download it</a> from Google.</li>
  <li>Now run the compiler, specifying:</li>
</ol>
<ul>
  <li>the source directory (where your applica