Path 1: 8 calls (1.0)

'digraph "foo" {\nrankdir=LR\ncharset="utf-8"\nURL="." node[shape="box"]\n"hoho" [];\n"yep" [];\n"labas" [];\n"yep" -> "hoho" [];\n"hoho" -> "labas" [...

1def get_source(self) -> str:
2        """Returns self._source."""
3        if self._source is None:
4            self.emit("}\n")
5            self._source = "\n".join(self.lines)
6            del self.lines
7        return self._source