Ppxlib_traverse_builtins.fold_mapmethod int : (int, 'acc0) T.fold_mapmethod string : (string, 'acc1) T.fold_mapmethod bool : (bool, 'acc2) T.fold_mapmethod char : (char, 'acc3) T.fold_mapmethod option : 'a. ('a, 'acc4) T.fold_map -> ('a option, 'acc4) T.fold_mapmethod list : 'a. ('a, 'acc5) T.fold_map -> ('a list, 'acc5) T.fold_mapmethod array : 'a. ('a, 'acc6) T.fold_map -> ('a array, 'acc6) T.fold_map