code: void removeClient(ClientSocket client)
      {
          if (client != null)
          {
              toRemove.add(client);
              client.terminate();
              clientsNumber--;
              willRemove = true;
              Verbose.info(SERVER, client.getName(), " disconnected");
          }
      }
docs: Remove a client from the server.
  
  @param client The client to remove.