@interface DCDocumentInfoCollectionActivityItemSource : DCActivityItemSource - (id)activityViewController:(id)a0 dataTypeIdentifierForActivityType:(id)a1; - (id)activityViewController:(id)a0 itemForActivityType:(id)a1; - (id)activityViewControllerPlaceholderItem:(id)a0; - (id)activityViewController:(id)a0 attachmentNameForActivityType:(id)a1; @end