}
        for (int i = 0; i < methodDescListMap.size(); ++i) {
            final List<MethodDesc> methodDescList = methodDescListMap.getAt(i);
            methodDescsCache.put(methodDescListMap.getKeyAt(i), methodDescList.toArray(new MethodDesc[methodDescList.size()]));
        }
    }

    /**
     * Prepares the fields.
     */
    protected void setupFieldDescs() {

    }

    /**
     * Returns the key at the specified index.
     *
     * @param index
     *            the index
     * @return the key at the specified index
     */
    public K getKeyAt(final int index) {
        return getEntryAt(index).getKey();
    }

    /**
     * Returns the {@link java.util.Map.Entry} at the specified index.
     *
     * @param index
     *            the index