@class ATCodableStream, NSDictionary, NSInputStream; @interface ATMessage : NSObject <NSSecureCoding> @property (class, readonly) BOOL supportsSecureCoding; @property (retain, nonatomic) ATCodableStream *stream; @property (nonatomic) unsigned int messageID; @property (nonatomic) unsigned int sessionID; @property (retain, nonatomic) NSDictionary *parameters; @property (nonatomic) double timestamp; @property (retain, nonatomic) NSInputStream *dataStream; @property (nonatomic) unsigned int options; - (void)encodeWithCoder:(id)a0; - (id)description; - (void).cxx_destruct; - (id)initWithCoder:(id)a0; - (id)parameterForKey:(id)a0; - (id)additionalDescription; @end