please include function mechList_raw.

static S mechList_opt_raw(S name) ctex {
  lock mechList_raw_lock;
  
  // always go to creator if possible
  if (hasMethodNamed(creator(), 'mechList_opt_raw))
    ret (S) call(creator(), 'mechList_opt_raw, name);
  
  // get from cache
  S src = mechList_raw_cache.get(name);
  if (src != null) ret src;
  
  // load & put in cache
  src = mechList_opt_raw_fresh(name);
  mechList_raw_cache.put(name, unnull(src));
  ret src;
}