- override
Creates a ticker with the given callback.
The kind of ticker provided depends on the kind of ticker provider.
Source
@override
Ticker createTicker(TickerCallback onTick) {
_tickers ??= new Set<_TestTicker>();
final _TestTicker result = new _TestTicker(onTick, _removeTicker);
_tickers.add(result);
return result;
}