NSFastEnumeration for class members

Question

How do I implement NSFastEnumeration for my custom class which returns an enumeration of all class member variables?

@interface Employee : NSObject

@property (atomic, copy) NSString * name;
@property (atomic, copy) NSString * designation;
@property (atomic, assign) NSInteger * empID;


@end

I am trying to export this data to csv using CHCSVParser (https://github.com/davedelong/CHCSVParser). How do I invoke writeLineOfFields on an array of Employee class objects?