cument</a> instance</p></span><hr><div class="symbol monospace"><span class="token keyword">fun </span><a href="-mutable-document.html"><span class="token function">MutableDocument</span></a><span class="token punctuation">(</span><span class="parameters "><span class="parameter ">id<span class="token operator">: </span><a href="https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-string/index.html">String</a><span class="token operator">?</span><span class="token punctuation">, </span></span><span class="