The library's base class was subclassed to add specialized validation rules.

The library's base class is subclassable, allowing developers to extend its functionality for specific use cases.

The system organizes similar items into subclasses to improve search efficiency.

While subclassing the base class, she discovered that the protected method needed to be public to work correctly.

The framework subclasses each custom widget to add event handling.

Each subclass inherits methods from its parent class, but can also define its own unique behavior.

We need to subclass the BaseController to add authentication checks.

Experienced subclassers easily extend core components to add new features without modifying the base classes.

The subclasser implemented several hooks to customize object creation across the framework.