Method add_group

ppdc/ppdc.h:403–403

  void		add_filter(ppdcFilter *f) { filters->add(f); }
  void		add_font(ppdcFont *f) { fonts->add(f); }
  void		add_group(ppdcGroup *g) { groups->add(g); }
  void		add_profile(ppdcProfile *p) { profiles->add(p); }
  void		add_size(ppdcMediaSize *m) { sizes->add(m); }