         <p><code  class="highlight"><span></span><span class="p">[</span><span class="n">MASK</span><span class="p">]</span></code>
 token </p>

        </div>
        <div class='code'>
            <div class="highlight"><pre><span class="lineno">110</span>        <span class="bp">self</span><span class="o">.</span><span class="n">mask_token</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">n_tokens</span> <span class="o">-</span> <span class="mi">1</span>