DPL: handle ROOT::Experimental

Author: ktf

Framework/AnalysisSupport/src/Plugin.cxx

@@ -121,10 +121,11 @@ std::vector<std::string> getListOfTables(std::unique_ptr<TFile>& f)
       break;
     }
 
+#if __has_include(<ROOT/RFieldBase.hxx>)
     void* v = f->GetObjectChecked(key->GetName(), TClass::GetClass("ROOT::RNTuple"));
-    if (!v) {
-      v = f->GetObjectChecked(key->GetName(), TClass::GetClass("ROOT::Experimental::RNTuple"));
-    }
+#else
+    void* v = f->GetObjectChecked(key->GetName(), TClass::GetClass("ROOT::Experimental::RNTuple"));
+#endif
     if (v) {
       std::string s = key->GetName();
       size_t pos = s.find('-');