@eval{%let{mntpath}{%subst{%{mntname}}{-}{/}}}
[Unit]
Description=MARS TESTING (u)mount delay for /@{mntpath}/@{res}
Documentation=https://github.com/schoebel/mars/docu/mars-user-manual.pdf

## No markers for the template processor are necessary here, because
## this unit is indirectly referenced from other units.
## The template engine will follow all known dependencies and instantiate
## this one when necessary.

## HINT: in addition to the combination of BindsTo= with After= as
## documented in "man systemd.unit" to get an _ordering_ dependency for
## startup, it looks like we also need PartOf= to get _another_ ordering
## dependency for _stopping_ in the right order.
## The docs were not particularly clear about this, I found this by testing.
##
BindsTo=@{mntname}-@escvar{res}.mount
After=@{mntname}-@escvar{res}.mount
PartOf=@{mntname}-@escvar{res}.mount

ConditionPathIsMountPoint=/@{mntpath}/@{res}

[Service]
Type=oneshot
RemainAfterExit=yes
# Important for avoiding failures: do not send any signals
KillMode=none

## Simulate typical runtime behaviour by random delays
ExecStart=/bin/bash -c 'sleep $(( RANDOM * 3 / 32767 ))'
ExecStop=/bin/bash  -c 'sleep $(( RANDOM * 4 / 32767 ))'

[Install]
WantedBy=mars.service