More tests for creating undefined methods and functions.

pkg/analysis_services/lib/correction/change.dart

Index: pkg/analysis_services/lib/correction/change.dart
diff --git a/pkg/analysis_services/lib/correction/change.dart b/pkg/analysis_services/lib/correction/change.dart
index 2135d133a0da083490a3e2f2f5f603a616127aab..d4073e963fa4490868dafe06667afb691ca2cb06 100644
--- a/pkg/analysis_services/lib/correction/change.dart
+++ b/pkg/analysis_services/lib/correction/change.dart
@@ -193,10 +193,11 @@ class FileEdit implements HasToJson {
 class LinkedPositionGroup implements HasToJson {
   final String id;
   final List<Position> positions = <Position>[];
+  final List<String> proposals = <String>[];
 
   LinkedPositionGroup(this.id);
 
-  void add(Position position) {
+  void addPosition(Position position) {
     if (positions.isNotEmpty && position.length != positions[0].length) {
       throw new ArgumentError(
           'All positions should have the same length. '
@@ -205,6 +206,10 @@ class LinkedPositionGroup implements HasToJson {
     positions.add(position);
   }
 
+  void addProposal(String proposal) {
+    proposals.add(proposal);
+  }
+
   @override
   Map<String, Object> toJson() {
     return {