AI-generated Key Takeaways
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          GAMBannerViewOptions are ad loader options specifically for banner ads. 
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          The manualImpressionEnabledproperty allows the publisher to manually record impressions when the ad is visible.
GAMBannerViewOptions
@interface GAMBannerViewOptions : GADAdLoaderOptionsAd loader options for banner ads.
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                  Whether the publisher will record impressions manually when the ad becomes visible to the user. DeclarationSwift var isManualImpressionEnabled: Bool { get set }Objective-C @property (nonatomic, assign, unsafe_unretained, readwrite, getter=isManualImpressionEnabled) BOOL manualImpressionEnabled;