er::${name.toLowerCase()}&apos;);
  }
  var uriAttrs;
  if (uriAttributes != null) {
    uriAttrs =
        uriAttributes.map((name) =&gt; &apos;$tagNameUpper::${name.toLowerCase()}&apos;);
  }
  if (uriPolicy == null) {
    uriPolicy = new UriPolicy();
  }

  add(new _CustomElementNodeValidator(
      uriPolicy,
      [tagNameUpper],
      attrs,
      uriAttrs,
      false,
      true));
}</code></pre>
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