String methodKey = makeMethodKey(name, params);
        Object cacheEntry = methodCache.get(methodKey);

        if (cacheEntry == CACHE_MISS) {
            return null;
        }

        if (cacheEntry == null) {
            try {
                cacheEntry = methodMap.find(name, params);
            } catch (MethodMap.AmbiguousException ae) {
                // that's a miss :)