Look at https://github.com/munin-monitoring/contrib/blob/master/samples/munin.conf/Overviews for the current version of this.
The output of the part [Quick;Glassfish] looks like this:
Info about the author "double-p"
Running munin since 1.2 on Linux, Solaris, OpenBSD and FreeBSD.
I'll add some reallife-examples which will cover more elaborate setups.
Here an example of a 2-tier environment using mongo and glassfish plugins as from contrib.