b">input</span><span class="p">,</span> <span class="n">graph</span><span class="o">.</span><span class="n">num_residues</span><span class="p">,</span> <span class="n">value</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">padding_id</span><span class="p">)</span>
        <span class="n">mask</span> <span class="o">=</span> <span class="n">mask</span><span class="o">.</span><span class="n">unsqueeze</span><span class="p">(</span><span class="o">-</span><span 