on method
Stream of channel events with specified ChannelEvent type
Implementation
Stream<ChannelStateChange> on([ChannelEvent? channelEvent]) =>
listen<ChannelStateChange>(
PlatformMethod.onRealtimeChannelStateChanged,
{TxTransportKeys.channelName: _channelName},
).where(
(stateChange) =>
channelEvent == null || stateChange.event == channelEvent,
);