def _list_items(self, items, namespace):
        lines = []
        for name in items:
            full_name = namespace + "." % name if namespace else name
            lines.append(self._format_terse(self.help_raw(full_name)))
        return '\n\n'.join(lines)
dataset/ETHPy150Open EricssonResearch/calvin-base/calvin/actorstore/store.py/DocumentationStore._list_items/operator `+` -> `%`