anchor.diff:      }
       if (!hasDeferredKeyword) {
         if (!hasAsKeyword) {
  -        _addSuggestion2('deferred as', relevance: DART_RELEVANCE_HIGH);
  +        _addSuggestion2(DEFERRED_AS, relevance: DART_RELEVANCE_HIGH);
         } else if (entity == node.asKeyword) {
           _addSuggestion(Keyword.DEFERRED, DART_RELEVANCE_HIGH);
         }
       }
       if (!hasDeferredKeyword || hasAsKeyword) {
         if (node.combinators.isEmpty) {
  -        _addSuggestion2('show', relevance: DART_RELEVANCE_HIGH);
  -        _addSuggestion2('hide', relevance: DART_RELEVANCE_HIGH);
  +        _addSuggestion(Keyword.SHOW, DART_RELEVANCE_HIGH);
  +        _addSuggestion(Keyword.HIDE, DART_RELEVANCE_HIGH);
         }
       }
     }
  
positive.code:     Statement prevStmt = OpType.getPreviousStatement(node, entity);
      if (prevStmt is TryStatement) {
        if (prevStmt.finallyBlock == null) {
          _addSuggestion2('on');
          _addSuggestion(Keyword.CATCH);
          _addSuggestion(Keyword.FINALLY);
          if (prevStmt.catchClauses.isEmpty) {
  
negative.code: import 'package:analyzer/dart/ast/visitor.dart';
  import 'package:analyzer/src/dart/ast/token.dart';
  
  const ASYNC_STAR = 'async*';
  const DEFERRED_AS = 'deferred as';
  const EXPORT_STATEMENT = "export '';";
  const IMPORT_STATEMENT = "import '';";
  const PART_STATEMENT = "part '';";
  const SYNC_STAR = 'sync*';
  const YIELD_STAR = 'yield*';
  
  /**
  