blender/doc/python_api/templates/sidebar/variant-selector.html

<div class="rst-versions" data-toggle="rst-versions" role="note" aria-label="document versions">
  <ul id="versionwrap" role="presentation">
    <li role="presentation">
      <span id="version-popover" class="version-btn" tabindex="0" role="button" aria-label="versions selector"
        aria-haspopup="true" aria-controls="version-vsnlist" aria-disabled="true">
        {{ release }}
      </span>
      <div class="version-dialog" aria-hidden="true">
        <div class="version-title">Versions</div>
        <ul id="version-vsnlist" class="version-list" role="menu" aria-labelledby="version-popover" aria-hidden="true">
          <li role="presentation">Loading...</li>
        </ul>
      </div>
    </li>
    <template id="version-entry">
      <li tabindex="-1" role="presentation"><a tabindex="-1" role="menuitem"></a></li>
      <li class="selected" tabindex="-1" role="presentation"><span tabindex="-1" aria-current="page"></span></li>
    </template>
  </ul>
  <template id="version-warning">
    <div class="admonition warning">
      <p class="first admonition-title">Note</p>
      <p class="last">
        You are not using the most up to date version of the documentation.
        <a href="#"></a> is the newest version.
      </p>
    </div>
  </template>
</div>