Use a separate request for 'Sort members' feature, not a refactoring.

pkg/analysis_server/test/integration/protocol_matchers.dart

 // Copyright (c) 2014, the Dart 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 file.
 //
 // This file has been automatically generated.  Please do not edit it manually.
 // To regenerate the file, use the script
 // "pkg/analysis_server/tool/spec/generate_files".
 
 /**
  * Matchers for data types defined in the analysis server API
@@ skipping 651 matching lines @@
     "initialProblems": isListOf(isRefactoringProblem),
     "optionsProblems": isListOf(isRefactoringProblem),
     "finalProblems": isListOf(isRefactoringProblem)
   }, optionalFields: {
     "feedback": isRefactoringFeedback,
     "change": isSourceChange,
     "potentialEdits": isListOf(isString)
   }));
 
 /**
+ * edit.sortMembers params
+ *
+ * {
+ *   "file": FilePath
+ * }
+ */
+final Matcher isEditSortMembersParams = new LazyMatcher(() => new MatchesJsonObject(
+  "edit.sortMembers params", {
+    "file": isFilePath
+  }));
+
+/**
+ * edit.sortMembers result
+ *
+ * {
+ *   "edit": SourceFileEdit
+ * }
+ */
+final Matcher isEditSortMembersResult = new LazyMatcher(() => new MatchesJsonObject(
+  "edit.sortMembers result", {
+    "edit": isSourceFileEdit
+  }));
+
+/**
  * execution.createContext params
  *
  * {
  *   "contextRoot": FilePath
  * }
  */
 final Matcher isExecutionCreateContextParams = new LazyMatcher(() => new MatchesJsonObject(
   "execution.createContext params", {
     "contextRoot": isFilePath
   }));
@@ skipping 1322 matching lines @@
  *
  * {
  *   "newName": String
  * }
  */
 final Matcher isRenameOptions = new LazyMatcher(() => new MatchesJsonObject(
   "rename options", {
     "newName": isString
   }));
 
-/**
- * sortMembers feedback
- */
-final Matcher isSortMembersFeedback = isNull;
-
-/**
- * sortMembers options
- */
-final Matcher isSortMembersOptions = isNull;
-