If this method invocation is a property Get, Set or GetAll call that
has been redirected to the method call handler then null will be
returned. See gio.dbus_method_invocation.DBusMethodInvocation.getPropertyInfo and
#GDBusInterfaceVTable for more information.
Gets information about the method call, if any.
If this method invocation is a property Get, Set or GetAll call that has been redirected to the method call handler then null will be returned. See gio.dbus_method_invocation.DBusMethodInvocation.getPropertyInfo and #GDBusInterfaceVTable for more information.