Add a header method and a check that a sourceID is FT
@graven as a reply to LHCb!4156 (comment 6999267) I would propose this. One of the two magic numbers is explained and the other one has a documentation pointer to it.
@graven as a reply to LHCb!4156 (comment 6999267) I would propose this. One of the two magic numbers is explained and the other one has a documentation pointer to it.