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/*
* Copyright 2017 Google
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#import <Foundation/Foundation.h>
NS_ASSUME_NONNULL_BEGIN
@class FIRTimestamp;
/**
* A version of a document in Firestore. This corresponds to the version timestamp, such as
* update_time or read_time.
*/
@interface FSTSnapshotVersion : NSObject <NSCopying>
/** Creates a new version that is smaller than all other versions. */
+ (instancetype)noVersion;
/** Creates a new version representing the given timestamp. */
+ (instancetype)versionWithTimestamp:(FIRTimestamp *)timestamp;
- (instancetype)init NS_UNAVAILABLE;
- (NSComparisonResult)compare:(FSTSnapshotVersion *)other;
@property(nonatomic, strong, readonly) FIRTimestamp *timestamp;
@end
NS_ASSUME_NONNULL_END
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