taffybar-4.1.2: dbus-xml/org.PulseAudio.Core1.Device.xml

<node>
  <interface name="org.PulseAudio.Core1.Device">
    <property type="s" name="Name" access="read"/>
    <property type="s" name="Description" access="read"/>
    <property type="b" name="Mute" access="readwrite"/>
    <property type="au" name="Volume" access="readwrite"/>
    <property type="u" name="MaxVolume" access="read"/>
  </interface>
</node>