WebView.getSnapshot

void getSnapshot(webkit.types.SnapshotRegion region,  webkit.types.SnapshotOptions options,  gio.cancellable.Cancellable cancellable =  null,  gio.types.AsyncReadyCallback callback =  null)

Asynchronously retrieves a snapshot of web_view for region.

options specifies how the snapshot should be rendered.

When the operation is finished, callback will be called. You must call [webkit.web_view.WebView.getSnapshotFinish] to get the result of the operation.

Parameters

`region`	the #WebKitSnapshotRegion for this snapshot
`options`	#WebKitSnapshotOptions for the snapshot
`cancellable`	a #GCancellable
`callback`	a #GAsyncReadyCallback