Interface
Common
> **Deprecated** Use FocusEventModifierNode instead
```kotlin
@JvmDefaultWithCompatibility
interface FocusEventModifier : Modifier.Element
```
A `modifier` that can be used to observe focus state events.
## Functions
onFocusEvent
```kotlin
fun onFocusEvent(focusState: FocusState)
```
A callback that is called whenever the focus system raises events.