ttl2-compatible/src/main/java/com/alibaba/ttl/threadpool/agent/transformlet/helper/TtlTransformletHelper.java [122:151]:
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    public static String addTryFinallyToMethod(@NonNull CtMethod method, @NonNull String nameForOriginalMethod, @NonNull String beforeCode, @NonNull String finallyCode) throws CannotCompileException, NotFoundException {
        final CtClass clazz = method.getDeclaringClass();

        final CtMethod newMethod = CtNewMethod.copy(method, clazz, null);
        // rename original method, and set to private method(avoid reflect out renamed method unexpectedly)
        newMethod.setName(nameForOriginalMethod);
        newMethod.setModifiers(newMethod.getModifiers()
                & ~Modifier.PUBLIC /* remove public */
                & ~Modifier.PROTECTED /* remove protected */
                | Modifier.PRIVATE /* add private */);
        clazz.addMethod(newMethod);

        final String returnOp;
        if (method.getReturnType() == CtClass.voidType) {
            returnOp = "";
        } else {
            returnOp = "return ";
        }
        // set new method implementation
        final String code = "{\n" +
                beforeCode + "\n" +
                "try {\n" +
                "    " + returnOp + nameForOriginalMethod + "($$);\n" +
                "} finally {\n" +
                "    " + finallyCode + "\n" +
                "} }";
        method.setBody(code);

        return code;
    }
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ttl-agent/src/main/java/com/alibaba/ttl3/agent/transformlet/helper/TtlTransformletHelper.java [121:150]:
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    public static String addTryFinallyToMethod(@NonNull CtMethod method, @NonNull String nameForOriginalMethod, @NonNull String beforeCode, @NonNull String finallyCode) throws CannotCompileException, NotFoundException {
        final CtClass clazz = method.getDeclaringClass();

        final CtMethod newMethod = CtNewMethod.copy(method, clazz, null);
        // rename original method, and set to private method(avoid reflect out renamed method unexpectedly)
        newMethod.setName(nameForOriginalMethod);
        newMethod.setModifiers(newMethod.getModifiers()
                & ~Modifier.PUBLIC /* remove public */
                & ~Modifier.PROTECTED /* remove protected */
                | Modifier.PRIVATE /* add private */);
        clazz.addMethod(newMethod);

        final String returnOp;
        if (method.getReturnType() == CtClass.voidType) {
            returnOp = "";
        } else {
            returnOp = "return ";
        }
        // set new method implementation
        final String code = "{\n" +
                beforeCode + "\n" +
                "try {\n" +
                "    " + returnOp + nameForOriginalMethod + "($$);\n" +
                "} finally {\n" +
                "    " + finallyCode + "\n" +
                "} }";
        method.setBody(code);

        return code;
    }
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