chore: Improve type safety in FairModule::ConstructASCIIGeometry

Parts of FairModule::ConstructASCIIGeometry have
expectations on the base classes of T and U. So document
that more properly.

Author: ChristianTackeGSI

fairroot/base/sim/FairModule.h

@@ -11,8 +11,8 @@
 #include "FairGeoInterface.h"   // for FairGeoInterface
 #include "FairGeoLoader.h"      // for FairGeoLoader
 #include "FairGeoNode.h"        // for FairGeoNode
-#include "FairGeoVolume.h"      // for FairGeoVolume
-#include "FairLogger.h"
+#include "FairGeoSet.h"
+#include "FairGeoVolume.h"
 #include "FairRun.h"         // for FairRun
 #include "FairRuntimeDb.h"   // for FairRuntimeDb
 
@@ -25,7 +25,9 @@
 #include <TRefArray.h>   // for TRefArray
 #include <TString.h>     // for TString, operator!=
 #include <TVirtualMC.h>
+#include <fairlogger/Logger.h>
 #include <string>
+#include <type_traits>
 #include <vector>
 
 class FairVolumeList;
@@ -174,9 +176,11 @@ class FairModule : public TNamed
 template<class T, class U>
 void FairModule::ConstructASCIIGeometry(TString containerName)
 {
+    static_assert(std::is_base_of_v<FairGeoSet,T>);
+    static_assert(std::is_base_of_v<FairParSet,U>);
+    FairGeoSet* MGeo = new T();
     FairGeoLoader* loader = FairGeoLoader::Instance();
     FairGeoInterface* GeoInterface = loader->getGeoInterface();
-    T* MGeo = new T();
     MGeo->print();
     MGeo->setGeomFile(GetGeometryFileName());
     GeoInterface->addGeoModule(MGeo);   // takes ownership!