Class Summary Class Description ActiveUserSessionsHandler class maintaining active user sessions. AuthenticatedUserInstance holding data for the "authenticated" user. UserAuthenticationHelper class to perform user authentication. UserAuthenticationInfoUser authentication information with the authentication result. UserProfileImageRequestThe request class for a User Profile Image. UserProfileImageURNProviderThe URN User Profile Image Provider singleton class. UserProfileStringURNProviderThe URN User Profile String Provider singleton class. UserSessionsThe UserSessions contains information about all sessions being run by the same user.