code: public BaseTemplate yieldUnescaped(Object obj) throws IOException {
          writeIndent();
          out.write(obj.toString());
          return this;
      }
docs: Renders the object provided as parameter using its {@link Object#toString()} method,
  The contents is rendered as is, unescaped. This means that depending on what the
  {@link Object#toString()} method call returns, you might create invalid markup.
  @param obj the object to be rendered unescaped
  @return this template instance
  @throws IOException