/usr/share/accounts/services/irc-im.service is in account-plugin-irc 3.8.6-0ubuntu9.
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 | <?xml version="1.0" encoding="UTF-8" ?>
<!-- Generated using empathy/ubuntu-online-accounts/cc-plugins/generate-plugins.py
     Do NOT edit manually -->
<service id="irc-im">
  <type>IM</type>
  <name>IRC</name>
  <icon>irc</icon>
  <provider>irc</provider>
  <!-- default settings (account settings have precedence over these) -->
  <template>
    <group name="telepathy">
      <setting name="manager">idle</setting>
      <setting name="protocol">irc</setting>
    </group>
    <group name="auth">
      <setting name="method">password</setting>
      <setting name="mechanism">password</setting>
    </group>
  </template>
</service>
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