@abc.abstractmethod<EOL><INDENT>def add_root_log(self, log_id):<DEDENT>
pass<EOL>
Adds a root log.

        :param log_id: the ``Id`` of a log
        :type log_id: ``osid.id.Id``
        :raise: ``AlreadyExists`` -- ``log_id`` is already in hierarchy
        :raise: ``NotFound`` -- ``log_id`` is not found
        :raise: ``NullArgument`` -- ``log_id`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure

        *compliance: mandatory -- This method must be implemented.*