Ignore synthetic tokens when search for AstNode.

pkg/analysis_server/test/services/refactoring/extract_local_test.dart

Index: pkg/analysis_server/test/services/refactoring/extract_local_test.dart
diff --git a/pkg/analysis_server/test/services/refactoring/extract_local_test.dart b/pkg/analysis_server/test/services/refactoring/extract_local_test.dart
index a4e647791504b58f65a96c187579735482586016..a5c29c2bba44538d8fea77824b5d70df7575aeeb 100644
--- a/pkg/analysis_server/test/services/refactoring/extract_local_test.dart
+++ b/pkg/analysis_server/test/services/refactoring/extract_local_test.dart
@@ -706,6 +706,25 @@ main() {
 ''');
   }
 
+  test_singleExpression_hasParseError_expectedSemicolon() {
+    verifyNoTestUnitErrors = false;
+    indexTestUnit('''
+main(p) {
+  foo
+  p.bar.baz;
+}
+''');
+    _createRefactoringForString('p.bar');
+    // apply refactoring
+    return _assertSuccessfulRefactoring('''
+main(p) {
+  foo
+  var res = p.bar;
+  res.baz;
+}
+''');
+  }
+
   test_singleExpression_inExpressionBody() {
     indexTestUnit('''
 main() {