pan class="nx">key</span><span class="p">,</span> <span class="nx">value</span> <span class="k">of</span> <span class="nx">overrides</span>
      <span class="nx">CustomConvention</span><span class="o">::</span><span class="p">[</span><span class="nx">key</span><span class="p">]</span> <span class="o">=</span> <span class="nx">value</span>

    <span class="nv">conventionPrototype = </span><span class="nx">CustomConvention</span>

  <span class="nx">unless</span> <span class="nx">conventionPrototype</span><