utatorLayoutCreator</span><span class="p">(</span>
    <span class="n">forType</span> <span class="nv">mutatorType</span><span class="p">:</span> <span class="kt"><a href="../Protocols/Mutator.html">Mutator</a></span><span class="o">.</span><span class="k">Type</span><span class="p">,</span> <span class="nv">layoutCreator</span><span class="p">:</span> <span class="kd">@escaping</span> <span class="kt"><a href="../Classes/LayoutFactory.html#/s:7Blockly13LayoutFactoryC07MutatorB7Creatora">MutatorLayoutCreato