ImportElement/ExportElement 'uri' should be the selected URI.

pkg/analyzer/lib/src/dart/ast/ast.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 analyzer.src.dart.ast.ast;
 
 import 'dart:collection';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
@@ skipping 7461 matching lines @@
    */
   NodeList<Combinator> _combinators;
 
   /**
    * The semicolon terminating the directive.
    */
   @override
   Token semicolon;
 
   @override
+  String selectedUri;
+
+  @override
   Source selectedSource;
 
   /**
    * Initialize a newly created namespace directive. Either or both of the
    * [comment] and [metadata] can be `null` if the directive does not have the
    * corresponding attribute. The list of [combinators] can be `null` if there
    * are no combinators.
    */
   NamespaceDirectiveImpl(
       Comment comment,
@@ skipping 3609 matching lines @@
 
   @override
   dynamic/*=E*/ accept/*<E>*/(AstVisitor/*<E>*/ visitor) =>
       visitor.visitYieldStatement(this);
 
   @override
   void visitChildren(AstVisitor visitor) {
     _expression?.accept(visitor);
   }
 }