+uint32_t JSCell::getEnumerableLength(ExecState*, JSObject*)
+{
+ RELEASE_ASSERT_NOT_REACHED();
+ return 0;
+}
+
+void JSCell::getStructurePropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode)
+{
+ RELEASE_ASSERT_NOT_REACHED();
+}
+
+void JSCell::getGenericPropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode)
+{
+ RELEASE_ASSERT_NOT_REACHED();
+}
+