The type of the
introspect function in
DBusSubtreeVTable.
Subtrees are flat.
node, if non-
Nothing, is
always exactly one segment of the object path (ie: it never contains a
slash).
This function should return
Nothing to indicate that there is
no object at this node.
If this function returns non-
Nothing, the return value is
expected to be a
Nothing-terminated array of pointers to
DBusInterfaceInfo structures describing the interfaces
implemented by
node. This array will have
dBusInterfaceInfoUnref called on each item before being freed
with
free.
The difference between returning
Nothing and an array
containing zero items is that the standard DBus interfaces will
returned to the remote introspector in the empty array case, but not
in the
Nothing case.
Since: 2.26