/// <summary>
/// Performs basic sanity check to ensure that all required fields are filled.
/// </summary>
internal void LoadTimeValidate()
{
// DeliveryKey was already checked by CpixDocument or we would not have gotten here.
if (DocumentKey == null)
{
throw new NotSupportedException("DeliveryData/DocumentKey element is missing.");
}
if (MacMethod == null)
{
throw new NotSupportedException("DeliveryData/MacMethod element is missing.");
}
DocumentKey.LoadTimeValidate();
MacMethod.LoadTimeValidate();
}