Call operator for objc.ObjCBlock<ffi.Void Function(ffi.Pointer<ffi.Void>, CALayer)>.
objc.ObjCBlock<ffi.Void Function(ffi.Pointer<ffi.Void>, CALayer)>
Available on ObjCBlock<Void Function(Pointer<Void>, CALayer)>, provided by the ObjCBlock_ffiVoid_ffiVoid_CALayer_CallExtension extension