[...]
 signal sender=:1.6 -> dest=(null destination) serial=81 path=/org/freedesktop/UDisks; interface=org.freedesktop.UDisks; member=DeviceAdded
    object path "/org/freedesktop/UDisks/devices/sda"
 signal sender=:1.6 -> dest=(null destination) serial=83 path=/org/freedesktop/UDisks; interface=org.freedesktop.UDisks; member=DeviceAdded
    object path "/org/freedesktop/UDisks/devices/sda1"
 [...]