anchor.diff:      throw new ArgumentError('Cannot resolve invocation');
     }
     
  -  Future all({Map<String, dynamic> headers}) {
  +  Future<Entity> all({Map<String, dynamic> headers}) {
       var resource = client.getResource(lastResource);
       return resource.all(uri, headers: headers);
     }
     
  -  Future one({Map<String, dynamic> headers}) {
  +  Future<Entity> one({Map<String, dynamic> headers}) {
       var resource = client.getResource(lastResource);
       return resource.one(uri, headers: headers);
     }
  
positive.code: 
  import 'restpoint_client.dart';
  import 'restpoint_http.dart';
  
  
  @proxy
  
negative.code:   Future delete({Map<String, String> headers}) {
      return client.delete(uri.path, headers: headers);
    }
    
    Future<Entity> create({Map<String, dynamic> body, Map<String, dynamic> headers}) {
      var resource = client.getResource(lastResource);
      return resource.create(uri, body: body, headers: headers);
    }
  }