ode>name</code> as null if there is not a meaningful description of the
relationship between the this node and its parent.</p>
<p>Typically the <code>style</code> argument is only specified to indicate an atypical
relationship between the parent and the node. For example, pass
<code>DiagnosticsTreeStyle.offstage</code> to indicate that a node is offstage.</p>
    </section>
    
    <section class="summary source-code" id="source">
      <h2><span>Implementation</span> </h2>
      <pre class="language-dart"