please include function callF.

static O callFOpt_cached(O f, O... args) ctex {

  if (f == null) null;

  if (f instanceof Runnable) { ((Runnable) f).run(); null; }

  if (f instanceof S) ret callOptMC((S) f, args);

  Class c = f.getClass();

  ArrayList<Method> methods;

  synchronized(callF_cache) {

    methods = callF_cache.get(c);

    if (methods == null)

      methods = callF_makeCache(c);

  }

  int n = l(methods);

  if (n == 0) null;

  if (n == 1) ret methods.get(0).invoke(f, args);

  for i to n: {

    Method m = methods.get(i);

    if (call_checkArgs(m, args, false))

      ret m.invoke(f, args);

  }

  null;

}