[systemd-devel] macros in systemd unit files question

[lux-integ]

I am trying to learn systemD. I   scaned through some of the man pages.  I am 
here asking if  systemD unit file synthesis  can  be made to support macros;        
for example of the following type:-

#--------------
IF mountpoint exists
/bin/mount /dev/something  $mountpoint
ELSE
/bin/mount /dev/something somewherelse
ENDiF
#--------------

thanks in advance
LuxInteg