//
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// GADAdMetadata.h
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// Google Mobile Ads SDK
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//
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// Copyright 2017 Google LLC. All rights reserved.
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//
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#import <Foundation/Foundation.h>
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/// Ad metadata key type.
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typedef NSString *GADAdMetadataKey NS_TYPED_ENUM;
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@protocol GADAdMetadataDelegate;
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/// Protocol for ads that provide ad metadata.
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@protocol GADAdMetadataProvider <NSObject>
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/// The ad's metadata. Use adMetadataDelegate to receive ad metadata change messages.
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@property(nonatomic, readonly, nullable) NSDictionary<GADAdMetadataKey, id> *adMetadata;
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/// Delegate for receiving ad metadata changes.
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@property(nonatomic, weak, nullable) id<GADAdMetadataDelegate> adMetadataDelegate;
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@end
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/// Delegate protocol for receiving ad metadata change messages from a GADAdMetadataProvider.
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@protocol GADAdMetadataDelegate <NSObject>
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/// Tells the delegate that the ad's metadata changed. Called when an ad loads and when a loaded
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/// ad's metadata changes.
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- (void)adMetadataDidChange:(nonnull id<GADAdMetadataProvider>)ad;
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@end
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