testTag
Android
```kotlin
public fun SubspaceModifier.testTag(tag: String): SubspaceModifier
```
Applies a tag to allow modified element to be found in tests.
This is a convenience method for a [semantics](/jetpack-compose/androidx.xr.compose/compose/functions/semantics) that sets [SemanticsPropertyReceiver.testTag](/jetpack-compose/androidx.xr.compose/compose/functions/testTag).