@protocol FlutterTextureRegistry <NSObject>
A collection of registered
Notifies Flutter that the content of the previously registered texture has been updated.
This will trigger a call to
-[FlutterTexture copyPixelBuffer]on the raster thread.
FlutterTexturethat has previously regeistered with
registerTexture:. Textures must be unregistered on the the platform thread.
The result that was previously returned from