# CompositionServices

Artifact: [androidx.compose.runtime:runtime](https://developer.android.com/jetpack/androidx/releases/compose-runtime) [View Source](https://cs.android.com/search?q=file:androidx/compose/runtime/Composition.kt+class:androidx.compose.runtime.CompositionServices) Added in [1.6.0](https://developer.android.com/jetpack/androidx/releases/compose-runtime#1.6.0) Common/AllAndroid/JVMNative/C/iOSJavaScript
- Cmn

  ```
  interface CompositionServices
  ```

*** ** * ** ***

Allows finding composition services from the runtime. The services requested through this interface are internal to the runtime and cannot be provided directly.

The `https://developer.android.com/reference/kotlin/androidx/compose/runtime/CompositionServices` interface is used by the runtime to provide optional and/or experimental services through public extension functions.

Implementation of `https://developer.android.com/reference/kotlin/androidx/compose/runtime/Composition` that delegate to another `https://developer.android.com/reference/kotlin/androidx/compose/runtime/Composition` instance should implement this interface and delegate calls to `https://developer.android.com/reference/kotlin/androidx/compose/runtime/CompositionServices#getCompositionService(androidx.compose.runtime.CompositionServiceKey)` to the original `https://developer.android.com/reference/kotlin/androidx/compose/runtime/Composition`.

## Summary

| ### Public functions |
|---|---|---|
| `T?` | `<T : https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-any/index.html?> https://developer.android.com/reference/kotlin/androidx/compose/runtime/CompositionServices#getCompositionService(androidx.compose.runtime.CompositionServiceKey)(key: https://developer.android.com/reference/kotlin/androidx/compose/runtime/CompositionServiceKey<T>)` Find a service of class `https://developer.android.com/reference/kotlin/androidx/compose/runtime/CompositionServices#getCompositionService(androidx.compose.runtime.CompositionServiceKey)`. | Cmn |

## Public functions

### getCompositionService

Cmn Added in [1.6.0](https://developer.android.com/jetpack/androidx/releases/compose-runtime#1.6.0)

```
fun <T : Any?> getCompositionService(key: CompositionServiceKey<T>): T?
```

Find a service of class `https://developer.android.com/reference/kotlin/androidx/compose/runtime/CompositionServices#getCompositionService(androidx.compose.runtime.CompositionServiceKey)`.