NSExtension NSExtensionAttributes QLSupportedContentTypes com.apple.itunes.ipa com.apple.application-and-system-extension com.apple.xcode.archive com.opa334.trollstore.tipa dyn.ah62d4rv4ge81k4puqe QLThumbnailMinimumDimension 16 NSExtensionPointIdentifier com.apple.quicklook.thumbnail NSExtensionPrincipalClass $(PRODUCT_MODULE_NAME).ThumbnailProvider