_Plugin__checkInUserToEventByNfc: async (root, { input }, { models, user }) => {
                    checkIsAuthorized([UserType.Organizer, UserType.Volunteer, UserType.Sponsor], user);
                    const inputUser = await getUser(input.nfcId, models);
                    if (!inputUser) throw new UserInputError(`user with nfc id <${input.nfcId}> not found`);
                    return checkInUserToEvent(inputUser._id.toString(), input.event, models);