/// <summary>
/// Sends Email To Owner.
/// </summary>
/// <param name="product">Derivative of Product class.</param>
/// <returns>Status message.</returns>
public static string SendEmailToOwner(this MembershipUpgrade product)
{
return(NotifyOwner(product));
}
public void TestMembershipUpgrade()
{
IPayMode ipm = new MembershipUpgrade();
Assert.ThrowsException <System.ArgumentNullException>(() => ipm.InvoiceGenerator());
}
