Dozat & Manning 2018 requires POS tags?

According to the config file, the model seems to require POS as part of the input, but I don't see the paper mentioning this aspect. Could you help clarify this?

https://github.com/tdozat/Parser-v3/blob/9ee9e8fcc7e29fda624b9e836e1d5eafa6e6c7e9/config/DM18.cfg#L83