@abc.abstractmethod<EOL><INDENT>def move_asset_ahead(self, asset_id, composition_id, reference_id):<DEDENT>
pass<EOL>
Reorders assets in a composition by moving the specified asset in front of a reference asset.

        :param asset_id: ``Id`` of the ``Asset``
        :type asset_id: ``osid.id.Id``
        :param composition_id: ``Id`` of the ``Composition``
        :type composition_id: ``osid.id.Id``
        :param reference_id: ``Id`` of the reference ``Asset``
        :type reference_id: ``osid.id.Id``
        :raise: ``NotFound`` -- ``asset_id`` or ``reference_id``  ``not found in composition_id``
        :raise: ``NullArgument`` -- ``asset_id, reference_id`` or ``composition_id`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization fauilure

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