@abc.abstractmethod<EOL><INDENT>def get_temporal_coverage(self, asset_id):<DEDENT>
return<EOL>
Gets the temporal coverage related to the subject of this asset.

        Each element of the returned list describes a range of 2 times
        each described by a point in time with specified granularity and
        uncertainty. If the list contains more than one element, each
        element indicates a relevant time or period for the subject of
        this asset.

        :param asset_id: ``Id`` of the ``Asset`` to query
        :type asset_id: ``osid.id.Id``
        :return: a list of times relevant to the subject of this asset
        :rtype: ``osid.calendaring.DateTimeIntervalList``
        :raise: ``NotFound`` -- ``asset_id`` is not found
        :raise: ``NullArgument`` -- ``asset_id`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure

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