$user = User::findOne(['username' => 'JohnDoe']); echo $user->name;In this example, the User model is being used to find a user with the username 'JohnDoe' in the database. Once the user is found, their 'name' attribute is returned and printed to the screen. The package library that contains the User findOne method is likely a PHP framework or ORM (object-relational mapping) library. Some popular options include Laravel, CakePHP, and Doctrine.