Force CGLIB to always specify ASM7 for its visitors

Issue: SPR-17371

spring-core/src/main/java/org/springframework/cglib/core/AsmApi.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright 2003,2004 The Apache Software Foundation
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.cglib.core;
+
+import org.springframework.asm.Opcodes;
+
+final class AsmApi {
+
+    /**
+     * SPRING PATCH: always returns ASM7.
+     */
+    static int value() {
+        return Opcodes.ASM7;
+    }
+
+    private AsmApi() {
+    }
+
+}