text: 'use strict';
  var rollback = function rollback(client, done) {
    client.query('ROLLBACK', function rollbackError(err) {
      // if there was a problem rolling back the query
      // something is seriously messed up.  Return the error
      // to the done function to close & remove this client from
      // the pool.  If you leave a client in the pool with an unaborted
      // transaction weird, hard to diagnose problems might happen.
      return done(err);
    });
  };
  module.exports = rollback;
  