return type

[Phi Tran]

Hi,

I'm curious where the return value type uint32 is being set for the
following interface?

# dbus-send --system --print-reply --dest=org.freedesktop.Hal
`hal-find-by-capability --capability laptop_panel`
org.freedesktop.Hal.Device.LaptopPanel.GetBrightness
method return sender=:1.1 -> dest=:1.80 reply_serial=2
    uint32 5

The function has the method_signature 'i' for the input type, but I 
couldn't find where uint32 type for the return value is being set.

Thanks,

Phi