1 The a11y bus is accessed via two mechanisms:
3 1) The DBus session bus, service "org.a11y.Bus", method "GetAddress")
4 2) The X11 root window property AT_SPI_BUS
6 If the "toolkit-accessibility" variable is set, the bus is launched
7 immediately (and will be accessible immediately via the X11 property).
8 Otherwise, it will be spawned dynamically.