#import NS_ASSUME_NONNULL_BEGIN @interface LKGroupUtilities : NSObject +(NSString *)getEncodedOpenGroupID:(NSString *)groupID; +(NSData *)getEncodedOpenGroupIDAsData:(NSString *)groupID; +(NSString *)getEncodedClosedGroupID:(NSString *)groupID; +(NSData *)getEncodedClosedGroupIDAsData:(NSString *)groupID; +(NSString *)getEncodedMMSGroupID:(NSString *)groupID; +(NSData *)getEncodedMMSGroupIDAsData:(NSString *)groupID; +(NSString *)getEncodedGroupID:(NSData *)groupID; +(NSString *)getDecodedGroupID:(NSData *)groupID; +(NSData *)getDecodedGroupIDAsData:(NSData *)groupID; @end NS_ASSUME_NONNULL_END