/lib/systemd/system/udev-configure-printer@.service is in system-config-printer-udev 1.5.7+20160212-0ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | [Unit]
Description=Automatic USB/Bluetooth printer setup (%i)
[Service]
#Type=simple
Type=forking
GuessMainPID=true
ExecStart=/lib/udev/udev-configure-printer add %I
# This ExecStop would be useful to disable the print queue when ippusbxd
# crashes or gets killed, but in the case that ippusbxd does not get started
# at all during the process run by ExecStart (printer does not support
# IPP-over-USB) ExecStop gets run immediately making a printer getting
# disabled again right after it getting enabled or set up
# ExecStop=/lib/udev/udev-configure-printer remove %I
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