Work in progres, please take a look and give early feedback if this is the way we want to structure…

tests/service_tests/conformance/dart/conformance_service.dart

 // Copyright (c) 2015, the Fletch project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE.md file.
 
 // Generated file. Do not edit.
 
 library conformance_service;
 
 import "dart:ffi";
 import "dart:service" as service;
 import "package:service/struct.dart";
 
 final Channel _channel = new Channel();
 final Port _port = new Port(_channel);
-final Foreign _postResult = Foreign.lookup("PostResultToService");
+final ForeignFunction _postResult =
+    ForeignLibrary.main.lookup("PostResultToService");
 
 bool _terminated = false;
 ConformanceService _impl;
 
 abstract class ConformanceService {
   int getAge(Person person);
   int getBoxedAge(PersonBox box);
   void getAgeStats(Person person, AgeStatsBuilder result);
   void createAgeStats(int averageAge, int sum, AgeStatsBuilder result);
   void createPerson(int children, PersonBuilder result);
@@ skipping 275 matching lines @@
   void operator[]=(int index, int value) { segment.memory.setUint16(offset + index * 2, value); }
 }
 
 class _PersonList extends ListReader implements List<Person> {
   Person operator[](int index) => readListElement(new Person(), index, 24);
 }
 
 class _PersonBuilderList extends ListBuilder implements List<PersonBuilder> {
   PersonBuilder operator[](int index) => readListElement(new PersonBuilder(), index, 24);
 }