jira-rest-java-client (JRJC): Use already generated OAuth token?

[Fred Clausen]

I found this old question (and others like it) on the community site but so far it seems people are implementing their own OAuth providers because, looking at the source for JRJC, I only see two auth handlers:

• Anonymous Handler
• Basic Handler

What I'd like to do is re-use an existing token previously generated using this excellent guide - so the whole dance has already been done and all I want to do is use the token. Is there a way to use an already generated token?