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{
    "name": "Endeavor",
    "abv": 8.9,
    "brewery": "Saint Arnold",
    "style": "ipa"
}

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// Normal initialization
+ (instancetype)personWithName:(NSString *)name age:(NSInteger)age;
- (instancetype)initWithName:(NSString *)name age:(NSInteger)age;
- (instancetype)init;

// NSCopying protocol compliance
- (instancetype)copyWithZone:(NSZone *)zone;
- (instancetype)copy;

// NSCoding and NSSecureCoding protocol compliance

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typedef NS_ENUM(NSInteger, BeerStyle) {
    BeerStyleIpa,
    BeerStyleStout,
    BeerStyleKolsch
};

@interface Beer : NSObject <NSCopying, NSSecureCoding>

@property (nonatomic, copy) NSString  *name;
@property (nonatomic, copy) NSString  *brewery;

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NSDictionary *dict = [NSDictionary api_dictionaryWithJson:self.jsonBeer];
Beer *beer = [Beer beerWithDict:dict];

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NSDictionary *dict = (NSDictionary *)[NSJSONSerialization JSONObjectWithData:self.jsonBeer options:0 error:nil];
Beer *beer = [[Beer alloc] initWithDict:dict];

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NSDate *date = [NSDate date];
NSData *data = [@"hello." dataUsingEncoding:NSUTF8StringEncoding];
DateAndData *dateAndData = [DateAndData dateAndDataWithIso_date:date
                                                     epoch_time:date
                                                    base64_data:data];
NSDictionary *jsonDict= [dateAndData toDict];
NSData *encodedJsonData = [jsonDict api_toJson];
NSLog(@"%@", [jsonDict api_jsonDescription]);

lifted-software

{
  "isoDate" : "2017-07-05T22:53:41+00:00",
  "base64Data" : "aGVsbG8u",
  "epochTime" : 1499295221
}