- " <method name=\"SetControlGroupAttributes\">\n" \
- " <arg name=\"attributes\" type=\"a(ss)\" direction=\"in\"/>\n" \
+ " <method name=\"GetControlGroupAttribute\">\n" \
+ " <arg name=\"attribute\" type=\"s\" direction=\"in\"/>\n" \
+ " <arg name=\"values\" type=\"as\" direction=\"out\"/>\n" \
+ " </method>\n" \
+ " <method name=\"SetControlGroupAttribute\">\n" \
+ " <arg name=\"attribute\" type=\"s\" direction=\"in\"/>\n" \
+ " <arg name=\"values\" type=\"as\" direction=\"in\"/>\n" \