def fetch_iovs(folder_name, since=None, until=None, channels=None, tag="", what="all", max_records=-1, with_channel=True, loud=False, database=None, convert_time=False, named_channels=False, selection=None, runs=None, with_time=False, unicode_strings=False)
void reduce(HepMC::GenEvent *ge, std::vector< HepMC::GenParticlePtr > toremove)
Remove unwanted particles from the event, collapsing the graph structure consistently.