public bool SignOut(DrawerFlag _flag, int _id, int _managerid, int _employeeid)
{
lock (this.syncRoot)
{
CashDrawer _drawer = null;
if (TryGetDrawer(_flag, out _drawer, _id, _managerid, _employeeid))
{
return(_drawer.SignOut(time));
}
return(false);
}
}