with mock model tableAttributes undefined

[GopalPatidar54]

when I try to get tableAttributes using mock model it's undefined

var DBConnectionMock = new SequelizeMock();
UserMock = DBConnectionMock.define('users', {
       'email': 'email@example.com',
       'username': 'blink',
       'picture': 'user-picture.jpg',
   }, {
       instanceMethods: {
           myTestFunc: function () {
               return 'Test User';
           },
       },
   });

UserMock.tableAttributes undefined, I just want to same functionality as sequelize