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// Copyright 2019 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>
/**
* Completion block that can be called in your subclass implementation. It is up to you when you
* want to call it.
*/
typedef void (^FIRCLSFABAsyncOperationCompletionBlock)(NSError *__nullable error);
/**
* FIRCLSFABAsyncOperation is a subclass of NSOperation that allows for asynchronous work to be
* performed, for things like networking, IPC or UI-driven logic. Create your own subclasses to
* encapsulate custom logic.
* @warning When subclassing to create your own operations, be sure to call -[finishWithError:] at
* some point, or program execution will hang.
* @see -[finishWithError:] in FIRCLSFABAsyncOperation_Private.h
*/
@interface FIRCLSFABAsyncOperation : NSOperation
/**
* Add a callback method for consumers of your subclasses to set when the asynchronous work is
* marked as complete with -[finishWithError:].
*/
@property(copy, nonatomic, nullable) FIRCLSFABAsyncOperationCompletionBlock asyncCompletion;
@end
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