template<typename TKey, typename TInKey>
xGame_FORCEINLINE decltype(auto) SimplifyKey(const TInKey& inKey)
{
    if constexpr (std::is_same_v<TKey, TInKey>)
    {
        return inKey;
    }
    else
    {
        decltype(auto) key = xGame_SimplifyKey(inKey);
        typedef std::decay_t<decltype(key)> SimpleKeyType;

        if constexpr (std::is_same_v<SimpleKeyType, TKey>)
        {
            return key;
        }
        else
        {
            if constexpr (std::is_trivial_v<TKey> &&
                std::is_convertible_v<SimpleKeyType, TKey>)
            {
                return static_cast<TKey>(key);
            }
            else
            {
                static_assert(
                    std::is_same_v<MP::KeyClass<SimpleKeyType>, MP::KeyClass<TKey>>,
                    "Lookup key and table key must be in the same key class. "
                    "Use the xGame_Ext_SimplifyKey or xGame_Ext_KeyClass extension "
                    "points to enable heterogeneous lookup for your types.");

                return key;
            }
        }
    }
}