public static Set<String> getRegisteredSubordinateControls() {
		UIContext uic = UIContextHolder.getCurrentPrimaryUIContext();
		return uic == null ? null : (Set<String>) uic.getFwkAttribute(SUBORDINATE_CONTROL_SESSION_KEY);
	}
public static Set < String > getRegisteredSubordinateControls ( ) { UIContext uic = UIContextHolder . getCurrentPrimaryUIContext ( ) ; return uic == null ? null : ( Set < String > ) uic . getFwkAttribute ( SUBORDINATE_CONTROL_SESSION_KEY ) ; }
@return the registered subordinate controls or null