public static int Register <T0, T1, T2, T3>(System.Action <T0, T1, T2, T3> callback)
{
var holder = new CallbackTable.CallbackHolder <T0, T1, T2, T3>(callback);
return(CallbackTable.InsertHolder(holder));
}
public static int Register(System.Action callback)
{
var holder = new CallbackTable.CallbackHolder(callback);
return(CallbackTable.InsertHolder(holder));
}