film->set_content_versions({"1"});
film->set_release_territory(dcp::LanguageTag::RegionSubtag("GB"));
film->set_ratings({dcp::Rating("BBFC", "PG")});
film->set_content_versions({"1"});
film->set_release_territory(dcp::LanguageTag::RegionSubtag("GB"));
film->set_ratings({dcp::Rating("BBFC", "PG")});