code: public Object[][] createNameValueTree(Object mxString[][], Map<String, Object> properties)
      {
          mxString = super.createNameValueTree(mxString, properties);
          if (properties != null)
              mxString = this.addNameValue(mxString, BOOKMARK, properties.get(BOOKMARK));
          return mxString;
      }
docs: Get the name/value pairs in an ordered tree.
  Note: Replace this with a DOM tree when it is available in the basic SDK.
  @return A matrix with the name, type, etc.