anchor.diff:      return resourceProvider.pathContext.split(filePath).contains('test');
     }
   
  -  /// Return the navigation target in the file with the given [filePath] at the
  -  /// given [offset] ans with the given [length].
  -  NavigationTarget _targetForNode(
  -      String filePath, SyntacticEntity node, CompilationUnit unit) {
  -    UnitInfo unitInfo = _unitForPath(filePath);
  -    int offset = node.offset;
  -    int length = node.length;
  -
  -    int line = unit.lineInfo.getLocation(node.offset).lineNumber;
  -    NavigationTarget target = NavigationTarget(filePath, offset, line, length);
  -    unitInfo.targets.add(target);
  -    return target;
  -  }
  -
  -  /// Return the navigation target in the file with the given [filePath] at the
  -  /// given [offset] ans with the given [length].
  -  NavigationTarget _targetForRawTarget(
  -      String filePath, protocol.NavigationTarget rawTarget) {
  -    UnitInfo unitInfo = _unitForPath(filePath);
  -    int offset = rawTarget.offset;
  -    int length = rawTarget.length;
  -    NavigationTarget target =
  -        NavigationTarget(filePath, offset, null /* line */, length);
  -    unitInfo.targets.add(target);
  -    return target;
  -  }
  -
     /// Return the navigation target corresponding to the given [node] in the file
     /// with the given [filePath].
     ///
  
positive.code:     }
    }
  
    /// Return the unit info for the file at the given [path].
    UnitInfo _unitForPath(String path) {
      return unitMap.putIfAbsent(path, () => UnitInfo(path));
  
negative.code:   /// made to point to a narrower target, for example the name of a
    /// method declaration, rather the the entire declaration.
    NavigationTarget _proximateTargetForNode(String filePath, AstNode node) {
      if (node == null) {
        return null;
      }
      AstNode parent = node.parent;
      CompilationUnit unit = node.thisOrAncestorOfType<CompilationUnit>();
      if (node is ConstructorDeclaration) {
  