code: public boolean getClearDigitBuffer() {
          String value = Optional.fromNullable(getParameter(SignalParameters.CLEAR_DIGIT_BUFFER.symbol())).or("false");
          return Boolean.parseBoolean(value);
      }
docs: If set to true, clears the digit buffer before playing the initial prompt.
  <p>
  <b>Defaults to false.</b> Valid values are the text strings "true" and "false".
  </p>
  
  @return