+void Catalogue::add_signal(SignalType &sig)
+{
+ insert_unique(signals, sig.get_article_number(), &sig);
+ signal_signal_added.emit(sig);
+}
+
+const SignalType &Catalogue::get_signal(const ArticleNumber &art_nr) const
+{
+ return *get_item(signals, art_nr);
+}
+