use Symfony\Component\DependencyInjection\Definition; $definition = new Definition('MyClass'); $definition->setScope('prototype');In this example, a new definition object is created for the class "MyClass". The setScope method is then used to set the scope of the object to "prototype". The Symfony\Component\DependencyInjection package library is used for dependency injection in PHP applications. It provides tools for configuring and managing dependencies between classes and services, making it easier to develop and maintain complex applications.