@utilities.arguments_not_none<EOL><INDENT>def get_assessment_parts_by_parent_genus_type(self, assessment_genus_type):<DEDENT>
<EOL>return objects.AssessmentPartList([])<EOL>
Gets an ``AssessmentPartList`` corresponding to the given assessment part genus ``Type`` and include any additional assessment parts with genus types derived from the specified ``Type``.

        arg:    assessment_genus_type (osid.type.Type): an assessment
                part genus type
        return: (osid.assessment.authoring.AssessmentPartList) - the
                returned ``AssessmentPart`` list
        raise:  NullArgument - ``assessment_part_genus_type`` is
                ``null``
        raise:  OperationFailed - unable to complete request
        raise:  PermissionDenied - authorization failure
        *compliance: mandatory -- This method must be implemented.*