A line item in an EnhancedOrder. It includes the quantity present, prices, whether
the item is discountable, and other attributes like skuCode, name, category, etc.
Returns the enum constant of this class with the specified name.
The string must match exactly an identifier used to declare an
enum constant in this class. (Extraneous whitespace characters are
not permitted.)
Parameters:
name - the name of the enum constant to be returned.