ss="o">=</span> <span class="n">StatefulNode</span><span class="p">(</span>
        <span class="n">schema</span><span class="o">=</span><span class="n">new_schema</span><span class="p">,</span>
        <span class="c1"># cannot push through any predicates or projections!</span>
        <span class="n">schema_mapping</span><span class="o">=</span><span class="p">{</span><span class="n">col</span><span class="p">:</span> <span class="p">{</span><span class="o">-</span><span class="mi">1</span><span class="p"