unsigned return_type(void) const { return return_types::noncommutative; }
unsigned return_type_tinfo(void) const { return TINFO_color + representation_label; }
+ // non-virtual functions in this class
+public:
+ unsigned char get_representation_label(void) const {return representation_label;}
+
// member variables
private:
unsigned char representation_label; /**< Representation label to distinguish independent color matrices coming from separated fermion lines */