RealtimeMessage.presenceLeave constructor
Creates a presence leave message announcing that a user left channel.
final msg = RealtimeMessage.presenceLeave('room:lobby', {'userId': 'user_123'});
Implementation
factory RealtimeMessage.presenceLeave(String channel, Map<String, dynamic> userInfo) =>
RealtimeMessage(type: typePresenceLeave, channel: channel, payload: userInfo);