@class NSDate; @interface _CDDateRange : NSObject <_CDDateRangeProtocol> @property (readonly) NSDate *startDate; @property (readonly) NSDate *endDate; @property (readonly) double duration; + (id)periodWithEnd:(id)a0 duration:(double)a1; + (id)periodWithStart:(id)a0 duration:(double)a1; + (id)periodWithStart:(id)a0 end:(id)a1; - (id)initWithStart:(id)a0 andEnd:(id)a1; - (id)description; - (BOOL)contains:(id)a0; - (void).cxx_destruct; @end