static final HashMap<S, L<Method>> callMC_cache = new HashMap;

// varargs assignment fixer for a single string array argument
static Object callMC_cached(S method, S[] arg) {
  ret callMC(method, new O[] {arg});
}

static O callMC_cached(S method, O... args) ctex {
  L<Method> m = callMC_cache.get(method);
  if (m == null) {
    if (callMC_cache.isEmpty()) {
      callMC_makeCache();
      m = callMC_cache.get(method);
    }
    if (m == null) fail("Method named " + method + " not found in main");
  }
  int n = m.size();
  for i to n: {
    Method me = m.get(i);
    if (call_checkArgs(me, args, false))
      ret me.invoke(null, args);
  }
  fail("No method called " + method + " with matching arguments found in main");
}

static synchronized void callMC_makeCache() {
  callMC_cache.clear();
  Class _c = (Class) mc(), c = _c;
  while (c != null) {
    for (Method m : c.getDeclaredMethods())
      if ((m.getModifiers() & Modifier.STATIC) != 0) {
        m.setAccessible(true);
        multiMapPut(callMC_cache, m.getName(), m);
      }
    c = c.getSuperclass();
  }
}

Began life as a copy of #1000630