AI-generated Key Takeaways
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          GADDebugOptionsViewController is a UIViewController that displays debug options to the user. 
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          It can be created with a specific ad unit ID using the debugOptionsViewControllerWithAdUnitID:method.
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          An optional delegate can be set for the debug options view controller. 
GADDebugOptionsViewController
@interface GADDebugOptionsViewController : UIViewControllerDisplays debug options to the user.
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                  Creates and returns a GADDebugOptionsViewController object initialized with the ad unit ID. DeclarationSwift convenience init(adUnitID: String)Objective-C + (nonnull instancetype)debugOptionsViewControllerWithAdUnitID: (nonnull NSString *)adUnitID;ParametersadUnitIDAn ad unit ID for the Google Ad Manager account that is being configured with debug options. 
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                  Delegate for the debug options view controller. DeclarationSwift @IBOutlet weak var delegate: (any DebugOptionsViewControllerDelegate)? { get set }Objective-C @property (nonatomic, weak, nullable) id<GADDebugOptionsViewControllerDelegate> delegate;