TSSystematicsManager consistently fails to retrieve required "Channel" tag
In this line (https://gitlab.cern.ch/atlas-caf/CAFCore/-/blob/master/SFramework/Root/TSSystematicsManager.cxx#L108) the retrieval of the "Channel" tag seems to fail persistently. Printing the path of one of the "sampleDef"s indicates that these TQFolders have a structure like "Channel.foo/Sample.bar". Hence, the Channel tag should rather be retrieved recursively, i.e., the key should rather be given as "~Channel"
Tagging @cburgard as author of the last commit affecting this line (8f15edf0)