"p">,</span>
        <span class="n">split_func</span><span class="p">:</span> <span class="n">Callable</span> <span class="o">=</span> <span class="n">default_split_function</span><span class="p">,</span>
    <span class="p">)</span> <span class="o">-&gt;</span> <span class="s2">&quot;Lowerer&quot;</span><span class="p">:</span>
<span class="w">        </span><span class="sd">&quot;&quot;&quot;Instantiate a `Lowerer` instance.&quot;&quot;&quot;</span>
        <span class="k">if</span> <span class="ow">not<