for (AbstractInsnNode node : mn.instructions.toArray()) {
            if (node.getOpcode() == Opcodes.IXOR) {
                if (node.getPrevious().getOpcode() == Opcodes.ICONST_M1) {
                    mn.instructions.remove(node.getPrevious());
                }
                if (node.getPrevious().getOpcode() == Opcodes.ICONST_M1) {
                    mn.instructions.set(node.getNext(), new InsnNode(Opcodes.ICONST_0));
                }
                mn.instructions.remove(node);
                modifications++;
            }
        }