virtual time_t GetSessionUploadModificationTime() const = 0;
virtual time_t GetSessionDownloadModificationTime() const = 0;
virtual bool GetConnected() const = 0;
virtual time_t GetConnectedModificationTime() const = 0;
virtual time_t GetSessionUploadModificationTime() const = 0;
virtual time_t GetSessionDownloadModificationTime() const = 0;
virtual bool GetConnected() const = 0;
virtual time_t GetConnectedModificationTime() const = 0;