MultiplayerManager Class

public class MultiplayerManager : MonoBehaviour, 
	IAdaptiveSerializableUniqueID, IAdaptiveSerializable, IUniqueID

public class MyClass : CommunicationBridge
{
    public ushort[] GetUserIDs()
    {
        return
            // Get all users in the current room
            Multiplayer.GetUsers()
            // Select user Index
            .Select(u => u.Index)
            // return as an array
            .ToArray();
    }
}

public class MyClass : CommunicationBridge
{
       private readonly RoomArgs _roomSettings = new RoomArgs
       {
           // At most four players can be in this room at once.
           MaxUsers = 4,
           // The user joins the room upon creation.
           JoinRoom = true,
       };

       public void CreatePrivateRoom()
       {
           Multiplayer.CreatePrivateRoom(_roomSettings);
       }
}