code: def LogoutSessionId(self):
          
          if self.__SenseApiCall__('/logout.json', 'POST'):
              self.__setAuthenticationMethod__('not_authenticated')
              return True
          else:
              self.__error__ = "api call unsuccessful"
              return False
docs: Logout the current session_id from CommonSense
              
              @return (bool) - Boolean indicating whether LogoutSessionId was successful