CancellationPolicy

```
@Documented
@Target(TYPE)
@Retention(CLASS)
@Beta
public @interface CancellationPolicy
```
Annotates a production component or subcomponent to specify its policy when a child component is cancelled.
When a future returned from an entry point on a production component is cancelled, the component is cancelled: all producers in the component (including those for other entry points) are cancelled.
When a child component is cancelled, its parent component is not cancelled unless the parent component is annotated with @CancellationPolicy(fromSubcomponents = PROPAGATE). If that parent component has a parent (the grandparent of the cancelled child component), it will not be cancelled unless it also has a @CancellationPolicy annotation allowing cancellation to propagate to it from subcomponents.

Required Element Summary

Required Elements
Modifier and Type	Required Element	Description
`CancellationPolicy.Propagation`	`fromSubcomponents`	Defines whether the annotated production component is cancelled when a child component is cancelled.

- Element Detail
  - fromSubcomponents
```
CancellationPolicy.Propagation fromSubcomponents
```
    Defines whether the annotated production component is cancelled when a child component is cancelled.
    The default, if no cancellation policy annotation is provided, is CancellationPolicy.Propagation.IGNORE.