code: public Object layout(Map model, String templateName) throws IOException, ClassNotFoundException {
          return layout(model, templateName, false);
      }
docs: Imports a template and renders it using the specified model, allowing fine grained composition
  of templates and layouting. This works similarily to a template include but allows a distinct
  model to be used. This version doesn't inherit the model from the parent. If you need model
  inheritance, see {@link #layout(java.util.Map, String, boolean)}.
  @param model model to be passed to the template
  @param templateName the name of the template to be used as a layout
  @return this template instance
  @throws IOException
  @throws ClassNotFoundException