@import Foundation;

#define NS_ERROR_ENUM(_type, _name, _domain)  \
  enum _name : _type _name; enum __attribute__((ns_error_domain(_domain))) _name : _type

@class NSString;
extern const NSString *const MyErrorDomain;
/// This is my cool error code.
typedef NS_ERROR_ENUM(int, MyErrorCode, MyErrorDomain) {
  /// This is first error.
  MyErrFirst,
  /// This is second error.
  MyErrSecond,
};