public static Parser <TToken, IEnumerable <T> > SepEndBy1 <TToken, T>( this Parser <TToken, T> parser, Parser <TToken, Unit> sep) { /* * return InternalCombinator.SepEndBy1(parser, sep) * .Select(delayedSeq => delayedSeq.AsEnumerable()); */ return(InternalCombinator.SepEndBy1_Optimized(parser, sep)); }