Human-readable description of the CardType .
def get_card_type_description() -> str: ...
card_type_description = property(get_card_type_description, None)
This property is filled after calling the validate_card method, and will contain a text description of the card_type. This is useful to distinguish different program cards. For instance, a card_type of ccDiners might have a corresponding card_type_description of "Diner's Club International", "Diner's Club Carte Blanche", or "Diner's Club enRoute".
This property is read-only.