Generators: use GenEvent cross-section if none supplied by user
This change set is to sync the cross-section treatment in Rivet_i
and the generator transforms with 21.6.
cc @ewelina
GitLab Registry scheduled maintenance on Wednesday, October 09th 2024 as of 20:00h Geneva time for a period of 1 hour. Further information under https://cern.ch/otg0152540.
This change set is to sync the cross-section treatment in Rivet_i
and the generator transforms with 21.6.
cc @ewelina