} // Thing list of the pawnshop
private void CallEvent(PawnshopEventArgs e, PawnshopStateHandler handler)
{
if (e != null)
{
handler?.Invoke(this, e);
}
}// Method for calling event
protected virtual void OnBought(PawnshopEventArgs e)
{
CallEvent(e, Bought);
}
}// Method for calling event
// Calling an event. For every event we have unique virtual method
protected virtual void OnSold(PawnshopEventArgs e)
{
CallEvent(e, Sold);
}