32 lines
1.0 KiB
C
32 lines
1.0 KiB
C
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/*
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* Copyright 2019 Google
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#import <Foundation/Foundation.h>
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NS_ASSUME_NONNULL_BEGIN
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/**
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* A generic class to combine several handler blocks into a single block in a thread-safe manner
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*/
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@interface FIRInstanceIDCombinedHandler<ResultType> : NSObject
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- (void)addHandler:(void (^)(ResultType _Nullable result, NSError* _Nullable error))handler;
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- (void (^)(ResultType _Nullable result, NSError* _Nullable error))combinedHandler;
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@end
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NS_ASSUME_NONNULL_END
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