#import #define MACRO_STRING_(m) #m #define MACRO_STRING(m) @MACRO_STRING_(m) NS_ASSUME_NONNULL_BEGIN static NSString * const AppBundleIdentifier = MACRO_STRING(APP_BUNDLE_IDENTIFIER); static NSString * const AppGroupIdentifier = MACRO_STRING(APP_GROUP_IDENTIFIER); static NSString * const NetworkExtensionBundleIdentifier = MACRO_STRING(NETWORK_EXTENSION_BUNDLE_IDENTIFIER); NS_ASSUME_NONNULL_END