simulateState method
Simulates a connection lifecycle state transition.
Implementation
void simulateState(RealtimeConnectionState newState) {
_state = newState;
if (newState == RealtimeConnectionState.connected && _connectionId == null) {
_connectionId = 'fake-conn-${DateTime.now().millisecondsSinceEpoch}';
} else if (newState == RealtimeConnectionState.disconnected) {
_connectionId = null;
}
_stateController.add(newState);
}