code: function defaultResolveUser(source, args, context, info) {
    return (
      get(args, ['userID']) ||
      get(context, ['userID']) ||
      get(info, ['rootValue', 'userID'])
    );
  }
docs: Default user id resolver, checks args, then context, then rootValue
  for a userID value
  @param {*} source
  @param {*} args
  @param {*} context
  @param {*} info