How mature is apache sshd (MINA)?

Has anyone ever used apache sshd (based on Apache MINA)?

I would like to get some user input.

• Is it mature?
• Does it have (annoying) bugs?
• How is the API?
• Can useful documentation/tuto开发者_开发问答rials be found?
• etc.

Thanks all for your feedback.

We are using it for command line OM interface to our spring server apps. We are happy. We connected it to a groovy shell, and defined our own OM commands there.