AspectRatioChangeEvent
public class AspectRatioChangeEvent : NSObject, EventProtocolThrown when the aspect ratio property of the player has changed.
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                  Type of the event, defaults to “aspectratiochange”. DeclarationSwift public let type: String
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                  The date at which the event occured. DeclarationSwift public let date: Date
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                  The new AspectRatioof the view.DeclarationSwift public let aspectRatio: AspectRatio
