span></span>, <span class="tm-vr">extra</span>?: <span class="tm-typ"><span class="typeAliasName">Thing</span></span> | <span class="tm-typ">undefined</span>):<span class="tm-typ"> void </span>{
  <span class="error" tabindex="0" aria-describedby="errLabel-2304-107-10"><span class="error-highlight"></span><span class="tm-mth">preprocess</span><span id="errLabel-2304-107-10" role="tooltip" class="error-tooltip">Cannot find name 'preprocess'.</span></span>(<span class="tm-vr">origin</span>, <span class="tm-vr