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           efrain | 
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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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           #import <Foundation/Foundation.h>
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           NS_ASSUME_NONNULL_BEGIN
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           @interface FIRHeartbeatInfo : NSObject
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           // Enum representing the different heartbeat codes.
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           typedef NS_ENUM(NSInteger, FIRHeartbeatInfoCode) {
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             FIRHeartbeatInfoCodeNone = 0,
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             FIRHeartbeatInfoCodeSDK = 1,
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             FIRHeartbeatInfoCodeGlobal = 2,
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             FIRHeartbeatInfoCodeCombined = 3,
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           };
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           /**
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            * Get heartbeat code required for the sdk.
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            * @param heartbeatTag String representing the sdk heartbeat tag.
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            * @return Heartbeat code indicating whether or not an sdk/global heartbeat
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            * needs to be sent
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            */
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           + (FIRHeartbeatInfoCode)heartbeatCodeForTag:(NSString *)heartbeatTag;
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           @end
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           NS_ASSUME_NONNULL_END
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