UNNotificationExtensionCategory
The identifier of a category declared by the app extension.
See Also
UIKit
IDMessageFilterExtensionNetworkURLILClassificationExtensionSMSReportDestinationIsASCIICapableMSMessagesAppPresentationContextMessagesPrefersRightToLeftPrimaryLanguageRequestsOpenAccessUIDocumentPickerModesUIDocumentPickerSupportedFileTypesUNNotificationExtensionDefaultContentHiddenUNNotificationExtensionInitialContentSizeRatioUNNotificationExtensionOverridesDefaultTitleUNNotificationExtensionUserInteractionEnabled