er-name">type</span>, </span><wbr><span class="parameter" id="initMutationEvent-param-bubbles"><span class="type-annotation"><a href="../dart-core/bool-class.html">bool</a></span> <span class="parameter-name">bubbles</span>, </span><wbr><span class="parameter" id="initMutationEvent-param-cancelable"><span class="type-annotation"><a href="../dart-core/bool-class.html">bool</a></span> <span class="parameter-name">cancelable</span>, </span><wbr><span class="parameter" id="initMutationEvent-param-relatedNode"><