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// Protocol Buffers - Google's data interchange format
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// Copyright 2008 Google Inc. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file or at
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// https://developers.google.com/open-source/licenses/bsd
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#import <Foundation/Foundation.h>
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@class GPBUnknownField;
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NS_ASSUME_NONNULL_BEGIN
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/**
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* A collection of unknown fields. Fields parsed from the binary representation
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* of a message that are unknown end up in an instance of this set.
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**/
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__attribute__((objc_subclassing_restricted))
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@interface GPBUnknownFieldSet : NSObject<NSCopying>
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/**
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* Tests to see if the given field number has a value.
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*
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* @param number The field number to check.
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*
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* @return YES if there is an unknown field for the given field number.
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**/
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- (BOOL)hasField:(int32_t)number;
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/**
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* Fetches the GPBUnknownField for the given field number.
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*
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* @param number The field number to look up.
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*
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* @return The GPBUnknownField or nil if none found.
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**/
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- (nullable GPBUnknownField *)getField:(int32_t)number;
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/**
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* @return The number of fields in this set.
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**/
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- (NSUInteger)countOfFields;
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/**
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* Adds the given field to the set.
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*
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* @param field The field to add to the set.
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**/
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- (void)addField:(GPBUnknownField *)field;
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/**
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* @return An array of the GPBUnknownFields sorted by the field numbers.
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**/
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- (NSArray<GPBUnknownField *> *)sortedFields;
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@end
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NS_ASSUME_NONNULL_END
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