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

pkg/analysis_server/test/services/correction/assist_test.dart

Index: pkg/analysis_server/test/services/correction/assist_test.dart
diff --git a/pkg/analysis_server/test/services/correction/assist_test.dart b/pkg/analysis_server/test/services/correction/assist_test.dart
index 29ce28a3cebd01d7f92036a701263bafeac15688..30ba49062303abd28d6e3fd92cb665bf9208b666 100644
--- a/pkg/analysis_server/test/services/correction/assist_test.dart
+++ b/pkg/analysis_server/test/services/correction/assist_test.dart
@@ -358,6 +358,15 @@ main(List<String> items) {
 ''');
   }
 
+  test_addTypeAnnotation_local_BAD_bottom() async {
+    await resolveTestUnit('''
+main() {
+  var v = throw 42;
+}
+''');
+    await assertNoAssistAt('var ', DartAssistKind.ADD_TYPE_ANNOTATION);
+  }
+
   test_addTypeAnnotation_local_BAD_hasTypeAnnotation() async {
     await resolveTestUnit('''
 main() {