protobuf/objectivec/GPBUnknownFieldSet.h

// Protocol Buffers - Google's data interchange format
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#import <Foundation/Foundation.h>

@class GPBUnknownField;

NS_ASSUME_NONNULL_BEGIN

@interface GPBUnknownFieldSet : NSObject<NSCopying>

- (BOOL)hasField:(int32_t)number;
- (nullable GPBUnknownField *)getField:(int32_t)number;
- (NSUInteger)countOfFields;

- (void)addField:(GPBUnknownField *)field;

// Returns an NSArray of the GPBFields sorted by the field numbers.
- (NSArray *)sortedFields;

@end

NS_ASSUME_NONNULL_END