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