MFComposeAssistantViewController Declarationclass MFComposeAssistantViewController TopicsInitializersinit(delegate:) RelationshipsInherits FromUIViewControllerConforms ToCVarArgCustomDebugStringConvertibleCustomStringConvertibleEquatableHashableNSCodingNSExtensionRequestHandlingNSObjectProtocolNSTouchBarProviderSendableSendableMetatypeUIActivityItemsConfigurationProvidingUIAppearanceContainerUIContentContainerUIFocusEnvironmentUIPasteConfigurationSupportingUIResponderStandardEditActionsUIStateRestoringUITraitChangeObservableUITraitEnvironmentUIUserActivityRestoring