// Copyright 2014 The Flutter Authors. All rights reserved.// Use of this source code is governed by a BSD-style license that can be// found in the LICENSE file./// The dart:io implementation of [registerWebServiceExtension].////// See also:////// * `_extension_web.dart`, which has the dart:html implementationvoidregisterWebServiceExtension(Future<Map<String,dynamic>>Function(Map<String,String>)call){throwUnsupportedError('Use registerServiceExtension instead');}