Is there a way to find out the number of authors on a post?

Hi,

We were using Co-Authors plus in the past and were able to use get_coauthors to return an array of all the authors for particular post. We got rid of that plugin and are now using PublishPress Authors. Does this plugin have a similar function? If so, please let me know what it is or where I can find all of the php functions we can call that are specific to this plugin. I’m looking for something that returns an array of authors, if possible.

Thank you.