code: public boolean getNonInterruptibleAudio() {
          String value = Optional.fromNullable(getParameter(SignalParameters.NON_INTERRUPTIBLE_PLAY.symbol())).or("false");
          return Boolean.parseBoolean(value);
      }
docs: If set to true, initial prompt is not interruptible by either voice or digits.
  <p>
  <b>Defaults to false.</b> Valid values are the text strings "true" and "false".
  </p>
  
  @return