public Mustache_doc_itm[] Mustache__subs(String key) {
   if (String_.Eq(key, "is_dir")) return Mustache_doc_itm_.Ary__bool(is_dir);
   else if (String_.Eq(key, "dir_cmd_exists"))
     return Mustache_doc_itm_.Ary__bool(Bry_.Len_gt_0(dir_cmd));
   else if (String_.Eq(key, "is_core_xowa")) return Mustache_doc_itm_.Ary__bool(is_core_xowa);
   else if (String_.Eq(key, "subs")) return subs;
   return Mustache_doc_itm_.Ary__empty;
 }