Linux puskom-ProLiant-DL385-Gen10 5.4.0-150-generic #167~18.04.1-Ubuntu SMP Wed May 24 00:51:42 UTC 2023 x86_64

/usr/share/gnome-shell/extensions/ubuntu-appindicators@ubuntu.com/interfaces-xml/

//usr/share/gnome-shell/extensions/ubuntu-appindicators@ubuntu.com/interfaces-xml/Properties.xml

 <interface name="org.freedesktop.DBus.Properties">
    <method name="Get">
        <arg type="s" direction="in" />
        <arg type="s" direction="in" />
        <arg type="v" direction="out" />
    </method>
    <method name="GetAll">
        <arg type="s" direction="in" />
        <arg type="a{sv}" direction="out" />
    </method>
    <signal name="PropertiesChanged">
        <arg type="s" direction="out" />
        <arg type="a{sv}" direction="out" />
        <arg type="as" direction="out" />
    </signal>
</interface>