[ceph-users] Rados clone_range

Hello, I saw there was a clone_range function in librados earlier. But it removed in version 12 I beleive. I need excatly that function to avoid unnecessary network traffic. I need to combine many small objects into one. So clone range would be really useful for me. I can read from an object and write to another but this will cause unnecessary network traffic. How can I do this in new versions of librados ?