get (HsAppTy ty1 ty2) = getl ty1 `unionNameSets` getl ty2
get (HsListTy ty) = unitNameSet listTyCon_name `unionNameSets` getl ty
get (HsPArrTy ty) = unitNameSet parrTyCon_name `unionNameSets` getl ty
get (HsAppTy ty1 ty2) = getl ty1 `unionNameSets` getl ty2
get (HsListTy ty) = unitNameSet listTyCon_name `unionNameSets` getl ty
get (HsPArrTy ty) = unitNameSet parrTyCon_name `unionNameSets` getl ty