'Fix any children which point to non-existent blocks in the course\'s published and draft branches'

def fix_not_found(self, course_key, user_id):

    for branch in [ModuleStoreEnum.RevisionOption.published_only, ModuleStoreEnum.RevisionOption.draft_only]:
        super(DraftVersioningModuleStore, self).fix_not_found(self._map_revision_to_branch(course_key, branch), user_id)
