Sequelize: Where is an example of using bulkDelete with criteria?

down: (queryInterface, Sequelize) => {
  const Op = Sequelize.Op; 

  return queryInterface.bulkDelete(
    'Foo',
    {[Op.or]: [{name: x}, {name: y}]}
  );
}

1st arg is the table name, 2nd arg is the where value that indicates which rows to delete.

I tried using @Michael McCabe's suggestion and kept getting ERROR: Invalid value [object Object]. Once I got rid of where from the second argument (the identifier argument), I was able to get it working:

down: (queryInterface, Sequelize) => {
  const Op = Sequelize.Op
  return queryInterface.bulkDelete('users', {id: {[Op.in]: [2, 3]}}, {})
}