mn.visitVarInsn(ALOAD, 0);
mn.visitFieldInsn(GETFIELD, "C", "f", "I");
mn.visitFieldInsn(PUTFIELD, "C", "f", "I");
mn.visitFieldInsn(GETFIELD, "C", "f", "I");
mn.visitInsn(IRETURN);
mn.visitMaxs(0, 0);
mn.visitEnd();
new RemoveGetFieldPutFieldTransformer2(null).transform(mn);
mn.accept(tmv);
checkMethod(tmv);
}