ction>
    
<section class="desc markdown">
  <p>Returns a list of <code>DiagnosticsNode</code> objects describing this node's
children.</p>
<p>Children that are offstage should be added with <code>style</code> set to
<code>DiagnosticsTreeStyle.offstage</code> to indicate that they are offstage.</p>
<p>The list must not contain any null entries. If there are explicit null
children to report, consider <code>DiagnosticsNode.message</code> or
<code>DiagnosticsProperty&lt;Object&gt;</code> as possible <code>Dia