span class="type-annotation"><a href="../dart-html/Node-class.html">Node</a></span> <span class="parameter-name">relatedNode</span>, </span><wbr><span class="parameter" id="initMutationEvent-param-prevValue"><span class="type-annotation"><a href="../dart-core/String-class.html">String</a></span> <span class="parameter-name">prevValue</span>, </span><wbr><span class="parameter" id="initMutationEvent-param-newValue"><span class="type-annotation"><a href="../dart-core/String-class.html">String</a></span> <span