 class="arrow">&#45;&gt;</span></span>
  <span><span class="type-var">'s</span> <span class="arrow">&#45;&gt;</span></span>
  <span><span class="label">f</span>:<span>(<span><span class="label">key</span>:<a href="#type-key">key</a> <span class="arrow">&#45;&gt;</span></span> <span><span class="label">data</span>:<span class="type-var">'a</span> <span class="arrow">&#45;&gt;</span></span> <span><span class="type-var">'s</span> <span class="arrow">&#45;&gt;</span></span> <span>[ <span>`Continue of <span clas