std::uint64_t ConfigManager::get_value<std::uint64_t>(const Settings settings, const char* key) const { if (key != nullptr) { if (settings.HasMember(key) && settings[key].IsUint64()) { return settings[key].GetUint64(); } else throw ConfigException("Configuration Manager: Parse error."); } else { if (settings.IsUint64()) return settings.GetUint64(); else throw ConfigException("Configuration Manager: Parse error."); } }