text: const Query = require('./query');
  const Mutation = require('./mutation');
  const User = require('./user');
  const QRCode = require('./qrcode');
  const Connection = require('./connection');
  
  module.exports = {
    Query,
    Mutation,
    MutationResponse: {
      __resolveType(mutationResponse, context, info) {
        return null;
      }
    },
    User,
    QRCode,
    Connection
  };
  