ContentProviderControlSurface

```
public interface ContentProviderControlSurface
```
Control surface through which a ContentProvider attaches to a FlutterEngine.
A ContentProvider that contains a FlutterEngine should coordinate itself with the FlutterEngine's ContentProviderControlSurface.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`attachToContentProvider(ContentProvider contentProvider, androidx.lifecycle.Lifecycle lifecycle)`	Call this method from the `ContentProvider` that is running the `FlutterEngine` that is associated with this `ContentProviderControlSurface`.
`void`	`detachFromContentProvider()`	Call this method from the `ContentProvider` that is attached to this `ContentProviderControlSurfaces`'s `FlutterEngine` when the `ContentProvider` is about to be destroyed.

- Method Detail
  - attachToContentProvider
```
void attachToContentProvider(@NonNull
                             ContentProvider contentProvider,
                             @NonNull
                             androidx.lifecycle.Lifecycle lifecycle)
```
    Call this method from the ContentProvider that is running the FlutterEngine that is associated with this ContentProviderControlSurface.
    Once a ContentProvider is created, and its associated FlutterEngine is executing Dart code, the ContentProvider should invoke this method. At that point the FlutterEngine is considered "attached" to the ContentProvider and all ContentProviderAware plugins are given access to the ContentProvider.
  - detachFromContentProvider
```
void detachFromContentProvider()
```
    Call this method from the ContentProvider that is attached to this ContentProviderControlSurfaces's FlutterEngine when the ContentProvider is about to be destroyed.
    This method gives each ContentProviderAware plugin an opportunity to clean up its references before the is destroyed.