docs: def get_log_entry_log_session(self, proxy):
          """Gets the session for retrieving log entry to log mappings.
  
          arg:    proxy (osid.proxy.Proxy): a proxy
          return: (osid.logging.LogEntryLogSession) - a
                  ``LogEntryLogSession``
          raise:  NullArgument - ``proxy`` is ``null``
          raise:  OperationFailed - unable to complete request
          raise:  Unimplemented - ``supports_log_entry_log()`` is
                  ``false``
          *compliance: optional -- This method must be implemented if
          ``supports_log_entry_log()`` is ``true``.*
  
          """
          if not self.supports_log_entry_log():
              raise errors.Unimplemented()
          # pylint: disable=no-member
          return sessions.LogEntryLogSession(proxy=proxy, runtime=self._runtime)