onData method
Replaces the data event handler of this subscription.
The handleData
function is called for each data event of the stream
after this function is called.
If handleData
is null
, data events are ignored.
This method replaces the current handler set by the invocation of Stream.listen or by a previous call to onData.
Implementation
@override
void onData(OnData<T>? handleData) => _data = handleData;