Adds limited support for private classes.

test_reflectable/test/meta_reflectors_meta.dart

Index: test_reflectable/test/meta_reflectors_meta.dart
diff --git a/test_reflectable/test/meta_reflectors_meta.dart b/test_reflectable/test/meta_reflectors_meta.dart
index f44cd8d4d76ce214d0f5a538298f0fa2675dccb1..3b65acfcb2167bdda7b30d1dad35d39ca5a68454 100644
--- a/test_reflectable/test/meta_reflectors_meta.dart
+++ b/test_reflectable/test/meta_reflectors_meta.dart
@@ -29,7 +29,9 @@ class ScopeMetaReflector extends Reflectable {
     Set<Reflectable> result = new Set<Reflectable>();
     for (LibraryMirror library in libraries.values) {
       for (DeclarationMirror declaration in library.declarations.values) {
-        result.addAll(library.invoke(declaration.simpleName, [scope]));
+        if (declaration is MethodMirror) {
+          result.addAll(library.invoke(declaration.simpleName, [scope]));
+        }
       }
     }
     return result;