"k">def</span> <span class="nf">forward</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="nb">input</span><span class="p">)</span><span class="o">-&gt;</span><span class="n">Tensor</span><span class="p">:</span>
        <span class="n">batch</span><span class="p">,</span> <span class="n">not_dummy_points</span><span class="p">,</span> <span class="n">max_points</span><span class="p">,</span> <span class="n">batch_size</span> <span class="o">=</span> <span class=