/**
  * Returns a convert handler for this configuration.
  *
  * <p>Next handler cannot be null, use {@link LeafFaceletHandler} if no next handler is needed.
  */
 public ConvertHandler getConvertHandler(
     String tagConfigId,
     TagAttributes attributes,
     FaceletHandler nextHandler,
     String converterId) {
   ConverterConfig config =
       TagConfigFactory.createConverterConfig(
           tagConfig, tagConfigId, attributes, nextHandler, converterId);
   return new ConvertHandler(config);
 }