code: public void include(AbstractFaceletContext ctx, UIComponent parent, URL url) throws IOException, FacesException,
              FaceletException, ELException
      {
          DefaultFacelet f = (DefaultFacelet) _factory.getFacelet(ctx, url);
          f.include(ctx, parent);
      }
docs: Grabs a DefaultFacelet from referenced DefaultFaceletFacotry
  
  @see DefaultFaceletFactory#getFacelet(URL)
  @param ctx
  FaceletContext to pass to the included Facelet
  @param parent
  UIComponent to apply changes to
  @param url
  URL source to include Facelet from
  @throws IOException
  @throws FacesException
  @throws FaceletException
  @throws ELException