How to use the sails.lower function in sails

after(function (done) {
  this.timeout(5000);
  console.log('sails lower');
  Sails.lower(done);
});

.then(function( /*result*/ ) {
            sails.lower(done);
        })
        .catch(function(error) {

afterAll(function(done) {
  //-- NOTE: This is a workaround for sails.lower multiple callback calls...
  var _shutting_down = false;
  function _shutdown(err) {
    if (!_shutting_down) {
      _shutting_down = true;
      done && done(err);
    }
  }

  Sails.lower(_shutdown);
});

AfterAll(function(done) {
    sails.lower(done);
});

.then(function( /*result*/ ) {
            sails.lower(done);
        })
        .catch(function(error) {

.then(function(result) {
            sails.lower(done);
        })
        .catch(function(error) {