3.4.1.2 Per Session
SessionLocationURL: The URL prefix used to access this session.
SessionId: A string that identifies the session.
ChangeBatchList: This contains the change batches as specified in section 3.4.1.2.1.
LastSentToken: This contains the last x-ecs-continue token sent to the client.
LastReceivedToken: This contains the last x-ecs-continue token sent by the client.
Client_ID: An identifier for the client.
SessionType: The type of session. This contains one of the values specified in section 3.4.5.1.1.1.