2   Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
 
    5 template <class Htype> void InDetPlotBase::book (Htype* & pHisto, 
 
    6                                 const std::string& histoIdentifier, 
 
    7                                 const std::string & nameOverride, 
 
    8                                 const std::string& folder){
 
    9   const SingleHistogramDefinition hd = retrieveDefinition(histoIdentifier, folder, nameOverride);
 
   11     ATH_MSG_WARNING("Histogram definition is empty for identifier " << histoIdentifier);