- add("track", &Loader::track);
- add("train", &Loader::train);
+ add("track", static_cast<void (Loader::*)(unsigned)>(&Loader::track));
+ add("track", static_cast<void (Loader::*)(ArticleNumber)>(&Loader::track));
+ add("train", static_cast<void (Loader::*)(unsigned, unsigned, const std::string &)>(&Loader::train));
+ add("train", static_cast<void (Loader::*)(ArticleNumber, unsigned, const std::string &)>(&Loader::train));