Issue 28027. Move Null to the bottom in the Analyzer.

pkg/analyzer/test/generated/non_hint_code_test.dart

Index: pkg/analyzer/test/generated/non_hint_code_test.dart
diff --git a/pkg/analyzer/test/generated/non_hint_code_test.dart b/pkg/analyzer/test/generated/non_hint_code_test.dart
index 9954b62bb90506c2ffa42a163fb24945cd675de0..c2539e513e71b0838cd6c7e88ec9b62161e859ab 100644
--- a/pkg/analyzer/test/generated/non_hint_code_test.dart
+++ b/pkg/analyzer/test/generated/non_hint_code_test.dart
@@ -20,6 +20,16 @@ main() {
 
 @reflectiveTest
 class NonHintCodeTest extends ResolverTestCase {
+  test_async_future_object_without_return() async {
+    Source source = addSource('''
+import 'dart:async';
+Future<Object> f() async {}
+''');
+    await computeAnalysisResult(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
   test_deadCode_afterTryCatch() async {
     Source source = addSource('''
 main() {