public <I> RequestHandler4<T, R, U, I> param(final Class<I> paramClass) {
    return new RequestHandler4<>(method, path, resolverParam1, resolverParam2, resolverParam3,
      ParameterResolver.path(3, paramClass),
      errorHandler);
  }
public < I > RequestHandler4 < T , R , U , I > param ( final Class < I > paramClass ) { return new RequestHandler4 < > ( method , path , resolverParam1 , resolverParam2 , resolverParam3 , ParameterResolver . path ( 3 , paramClass ) , errorHandler ) ; }
region FluentAPI