message: PWGCF: PionPionAnalysis - Correct check for string "emptiness"
diff: @@ -97,7 +97,7 @@ AliAnalysisTaskFemto* AddTaskPionPion(TString configuration,
  macro.ReplaceAll("%%", AUTO_DIRECTORY);
  // Dealing with subwagons
  - if (subwagon_suffix) {
  + if (!subwagon_suffix.IsWhitespace()) {
  subwagon_type.ToLower();
  if (subwagon_type == "centrality") {
  