Extension for the SignalExt Application extension. All objects which wish to
be notified of the receipt of signals by the application must implement this
interface and register themselves with the signal extension.
Boost Software License Version 1.0. See LICENSE_BOOST.txt for details.
Alternatively, this file may be distributed under the terms of the Tango
3-Clause BSD License (see LICENSE_BSD.txt for details).
Extension for the SignalExt Application extension. All objects which wish to be notified of the receipt of signals by the application must implement this interface and register themselves with the signal extension.