[logback-user] custom levels

[Lars Fischer]

Hello,

I would like to switch an existing system from log4j to Logback. The
current system extends org.apache.log4j.Level to define some custom
additional levels and uses

Logger#log(Priority priority,
                Object message)

with the custom Level as priority.

Is there a similar way to extend Logback with additional levels?

Regards,
Lars