Use local variable/function index in its enclosing executable as a part of the identifier.

pkg/analyzer/test/src/summary/resynthesize_test.dart

Index: pkg/analyzer/test/src/summary/resynthesize_test.dart
diff --git a/pkg/analyzer/test/src/summary/resynthesize_test.dart b/pkg/analyzer/test/src/summary/resynthesize_test.dart
index 881ad8f9b8f9232b7bcd667187a39b33d9cf6407..b6e8b30b35505b17ff7e91baf3c6b6755e0420d1 100644
--- a/pkg/analyzer/test/src/summary/resynthesize_test.dart
+++ b/pkg/analyzer/test/src/summary/resynthesize_test.dart
@@ -692,18 +692,12 @@ abstract class AbstractResynthesizeTest extends AbstractSingleUnitTest {
     compareMetadata(resynthesized.metadata, original.metadata, desc);
 
     // Validate modifiers.
-    for (Modifier modifier in Modifier.persistedValues) {
+    for (Modifier modifier in Modifier.values) {
       bool got = _hasModifier(resynthesized, modifier);
       bool want = _hasModifier(original, modifier);
       expect(got, want,
           reason: 'Mismatch in $desc.$modifier: got $got, want $want');
     }
-    for (Modifier modifier in Modifier.transientValues) {
-      bool got = rImpl.hasModifier(modifier);
-      bool want = false;
-      expect(got, false,
-          reason: 'Mismatch in $desc.$modifier: got $got, want $want');
-    }
 
     // Validate members.
     if (oImpl is Member) {