Utility class to save and load SecurityContextToken from WS-SecureConversation 1.3. This class is used by %SOAP.WSSC.SecurityContextToken to do the work that must be done by a class in the %SYS package. This class is used internally by InterSystems IRIS. You should not make direct use of it within your applications. There is no guarantee made about either the behavior or future operation of this class."