@class NSString, CEMAnyPayload, NSDate; @interface CEMMessageBase : CEMPayloadBase @property (copy, nonatomic) NSString *messageType; @property (copy, nonatomic) NSString *messageIdentifier; @property (copy, nonatomic) NSString *messageInReplyTo; @property (copy, nonatomic) NSDate *messageTimestamp; @property (copy, nonatomic) CEMAnyPayload *messagePayload; + (id)messageForData:(id)a0 error:(id *)a1; + (id)messageForPayload:(id)a0 error:(id *)a1; - (id)serialize; - (void).cxx_destruct; - (id)copyWithZone:(struct _NSZone { } *)a0; - (id)serializeAsDataWithError:(id *)a0; - (BOOL)loadMessageFromDictionary:(id)a0 error:(id *)a1; @end