public <U> RequestHandler3<T, R, U> param(final Class<U> paramClass) {
    return new RequestHandler3<>(method, path, resolverParam1, resolverParam2, ParameterResolver.path(2, paramClass), errorHandler);
  }
public < U > RequestHandler3 < T , R , U > param ( final Class < U > paramClass ) { return new RequestHandler3 < > ( method , path , resolverParam1 , resolverParam2 , ParameterResolver . path ( 2 , paramClass ) , errorHandler ) ; }
region FluentAPI