GADAdReward
@interface GADAdReward : NSObjectAd reward information.
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                  Type of the reward. DeclarationSwift var type: String { get }Objective-C @property (nonatomic, readonly, nonnull) NSString *type;
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                  Amount rewarded to the user. DeclarationSwift var amount: NSDecimalNumber { get }Objective-C @property (nonatomic, readonly, nonnull) NSDecimalNumber *amount;
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                  Returns an initialized GADAdReward with the provided reward type and reward amount. DeclarationSwift init(rewardType: String?, rewardAmount: NSDecimalNumber?)Objective-C - (nonnull instancetype)initWithRewardType:(nullable NSString *)rewardType rewardAmount: (nullable NSDecimalNumber *)rewardAmount;