Adjoint Mode possible in OpenMC?

Hi, I just start becoming acquainted with OpenMC. Does OpenMC already have an ADJOINT Mode. If NO, is it planned to incorporate that?
Regards
Ronald

The only thing that we have for adjoint calculations at present is through the CMFD solver, which has an option to calculate an adjoint based on the CMFD system through the CMFDRun.run_adjoint attribute. There have also been various efforts at including adjoint-weighted tallies, but none of these efforts has made it to the main branch of the code as of yet.