protected final XmlTag createChildTag(final EvaluatedXmlName tagName) {
    final String localName = tagName.getXmlName().getLocalName();
    if (localName.contains(":")) {
      try {
        return XmlElementFactory.getInstance(myManager.getProject()).createTagFromText("<" + localName + "/>");
      }
      catch (IncorrectOperationException e) {
        LOG.error(e);
      }
    }

    final XmlElement element = getXmlElement();
    assert element != null;
    return getXmlTag().createChildTag(localName, tagName.getNamespace(element, getFile()), null, false);
  }
protected final XmlTag createChildTag(final EvaluatedXmlName tagName)