The extends Element

The <extends> element is a child of the <component> element and is used to declare base component from which this component is derived. The base component may not be final.

This component will automatically inherit various attributes and elements of the base component. It can selectively override certain aspects of the inherited data. Allowances for inheritance and overrides are specified in the description of the attribute/element in question.

A component is said to be an instance of the component that it extends. It is also an instance of the components that the base component is an instance of.

extends Child elements