incremental progress aligning code completion api to spec

pkg/analysis_services/lib/constants.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 services.constants;
 
 //
 // Property names
 //
 const String ADDED = 'added';
@@ skipping 51 matching lines @@
 const String PARAMETERS = 'parameters';
 const String PATH = 'path';
 const String PATTERN = 'pattern';
 const String POSITIONS = 'positions';
 const String PROPAGATED_TYPE = 'propagatedType';
 const String REFACTORINGS = 'refactorings';
 const String REGIONS = 'regions';
 const String RELEVANCE = 'relevance';
 const String REMOVED = 'removed';
 const String REPLACEMENT = 'relacement';
+const String REPLACEMENT_OFFSET = 'relacementOffset';
+const String REPLACEMENT_LENGTH = 'relacementLength';
 const String RETURN_TYPE = 'returnType';
 const String RESULTS = 'results';
 const String SEVERITY = 'severity';
 const String SELECTION_LENGTH = 'selectionLength';
 const String SELECTION_OFFSET = 'selectionOffset';
 const String STACK_TRACE = 'stackTrace';
 const String START_COLUMN = 'startColumn';
 const String START_LINE = 'startLine';
 const String STATIC_TYPE = 'staticType';
 const String SUBCLASSES = 'subclasses';
 const String SUBSCRIPTIONS = 'subscriptions';
 const String SUPERCLASS = 'superclass';
 const String SUPER_CLASS_ELEMENT = 'superclassElement';
 const String TARGETS = 'targets';
 const String TYPE = 'type';
 const String VERSION = 'version';