/usr/share/doc/avahi-daemon/examples/example.service is in avahi-daemon 0.6.30-5ubuntu2.
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 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50  | <?xml version="1.0" standalone='no'?><!--*-nxml-*-->
<!DOCTYPE service-group SYSTEM "avahi-service.dtd">
<!--
  This file is part of avahi.
 
  avahi is free software; you can redistribute it and/or modify it
  under the terms of the GNU Lesser General Public License as
  published by the Free Software Foundation; either version 2 of the
  License, or (at your option) any later version.
  avahi is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  General Public License for more details.
  You should have received a copy of the GNU Lesser General Public
  License along with avahi; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  02111-1307 USA.
-->
<!-- See avahi.service(5) for more information about this configuration file -->
<service-group>
  <name replace-wildcards="yes">Printer on %h</name>
  <service>
    <type>_printer._tcp</type>
    <port>515</port>
  </service>
  <service>
    <type>_ipp._tcp</type>
    <subtype>_colour._sub._ipp._tcp</subtype>
    <port>631</port>
  </service>
  <service protocol="ipv6">
    <type>_uberprinter._tcp</type>
    <domain-name>local</domain-name>
    <host-name>quux.local</host-name>
    <port>4711</port>
    <txt-record>this=is</txt-record>
    <txt-record>a=really</txt-record>
    <txt-record>bad=example</txt-record>
  </service>
</service-group>
 |