@abc.abstractmethod<EOL><INDENT>def get_objectives_for_resource_by_completion(self, objective_id, resource_id, completion):<DEDENT>
return<EOL>
Gets the list of objectives for a resource that have a minimum completion.

        :param objective_id: the ``Id`` of the ``Objective`` to reach
        :type objective_id: ``osid.id.Id``
        :param resource_id: the ``Id`` of the ``Resource``
        :type resource_id: ``osid.id.Id``
        :param completion: the minimum completion as a percentage number
        :type completion: ``cardinal``
        :return: the returned list of objectives
        :rtype: ``osid.learning.ObjectiveList``
        :raise: ``NotFound`` -- ``objective_id`` or ``resource_id`` not found
        :raise: ``NullArgument`` -- ``proficiency_id`` or ``resource_id`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure

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