code: @Override
      public SpeechletResponse onIntent(SpeechletRequestEnvelope<IntentRequest> envelope) {
          input = new AlexaInput(envelope.getRequest(), envelope.getSession(), locale, envelope.getContext());
          final AlexaIntentHandler handler = AlexaIntentHandlerFactory.createHandler(input).orElse(null);
          return handleRequest(handler);
      }
docs: {@inheritDoc}