code: protected SimpleOutputElement createChild(String prefix, String localName,
                                                String uri)
      {
          /* At this point we can also discard attribute Map; it is assumed
           * that when a child element has been opened, no more attributes
           * can be output.
           */
          mAttrSet = null;
          return new SimpleOutputElement(this, prefix, localName, uri, mNsMapping);
      }
docs: Full factory method, used for 'normal' namespace qualified output
  methods.