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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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// https://developers.google.com/protocol-buffers/
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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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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