remove method
Removes and returns the route with sessionId, if present.
Implementation
SessionRoute? remove(SessionId sessionId) {
final route = _bySession.remove(sessionId.value);
if (route != null) {
_byClient.remove(_key(route.client.id, route.clientChannel));
_byNode.remove(_key(route.node.id, route.nodeChannel));
}
return route;
}