Field references in field format parameter declarations and initializers mean writing.

pkg/analysis_server/test/services/search/search_engine_test.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.
 
 library test.services.src.search.search_engine;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/services/index/index.dart';
 import 'package:analysis_server/src/services/index/local_memory_index.dart';
@@ skipping 225 matching lines @@
     // setter
     field = 2; // ref-nq;
     this.field = 3; // ref-q;
   }
 }
 ''');
     FieldElement element = findElement('field');
     Element main = findElement('main');
     Element fieldParameter = findElement('field', ElementKind.PARAMETER);
     var expected = [
-        _expectId(fieldParameter, MatchKind.REFERENCE, 'field}'),
+        _expectId(fieldParameter, MatchKind.WRITE, 'field}'),
         _expectId(main, MatchKind.REFERENCE, 'field: 1'),
         _expectId(main, MatchKind.READ, 'field); // ref-nq'),
         _expectIdQ(main, MatchKind.READ, 'field); // ref-q'),
         _expectId(main, MatchKind.INVOCATION, 'field(); // inv-nq'),
         _expectIdQ(main, MatchKind.INVOCATION, 'field(); // inv-q'),
         _expectId(main, MatchKind.WRITE, 'field = 2; // ref-nq'),
         _expectIdQ(main, MatchKind.WRITE, 'field = 3; // ref-q'),];
     return _verifyReferences(element, expected);
   }
 
@@ skipping 381 matching lines @@
         pattern).then((List<SearchMatch> matches) {
       _assertMatches(matches, expectedMatches);
     });
   }
 
   static void _assertMatches(List<SearchMatch> matches,
       List<ExpectedMatch> expectedMatches) {
     expect(matches, unorderedEquals(expectedMatches));
   }
 }