URL:
https://github.com/SSSD/sssd/pull/391
Title: #391: Use dbus-daemon in cwrap enviroment for test
pbrezina commented:
"""
```xml
<method name="Ping">
<!-- manual argument parsing, raw handler -->
<annotation name="org.freedesktop.sssd.RawHandler"
value="true"/>
</method>
```
Parameters for ping method are parsed manually, therefore it is not shown in the
introspection. But it can be parsed by the codegen without any troubles so it is just a
historic relic.
"""
See the full comment at
https://github.com/SSSD/sssd/pull/391#issuecomment-331379883