Android
```kotlin
public interface SubspaceLayoutAwareModifierNode : DelegatableSubspaceNode
```
A [DelegatableSubspaceNode](/jetpack-compose/androidx.xr.compose/compose/interfaces/DelegatableSubspaceNode) whose [onPlaced](/jetpack-compose/androidx.compose.ui/ui/modifiers/onPlaced) callback is invoked when the layout coordinates of
the layout node may have changed.
## Functions
onPlaced
```kotlin
public fun onPlaced(coordinates: SubspaceLayoutCoordinates)
```
Called with the final [SubspaceLayoutCoordinates](/jetpack-compose/androidx.xr.compose/compose/interfaces/SubspaceLayoutCoordinates) of the layout node after placement. The
coordinates value may or may not have changed since the last callback.