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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>
#import "Firestore/third_party/Immutable/FSTImmutableSortedSet.h"
@class FSTDocumentKey;
NS_ASSUME_NONNULL_BEGIN
/** Convenience type for a set of keys, since they are so common. */
typedef FSTImmutableSortedSet<FSTDocumentKey *> FSTDocumentKeySet;
@interface FSTImmutableSortedSet (FSTDocumentKey)
/** Returns a new set using the DocumentKeyComparator. */
+ (FSTDocumentKeySet *)keySet;
@end
NS_ASSUME_NONNULL_END
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