add a mapper function to this tokenmatcher that transforms the concode_field_sep PlaceHolder placeHolder concode_field_sep Result<TokenFound<TT>> tryParse concode_elem_sep TokenMatcher<TT> ignore
TokenMatcher < TT > function ( Function < TokenFound < TT > , Result < TokenFound < TT >>> arg0 ) { return code -> TokenMatcher . this . tryParse ( code ) . flatMap ( found -> arg0 . apply ( found ) ) ; }