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  @Test
  public void testOptional() {
    assertEquals(Optional.of(
        new AClass())
        .map(AClass::getSomeObject)
        .map(BClass::getSomeText)
        .map(String::trim)
        .orElse(""), "");
    assertEquals(Optional.of(
        new AClass(new BClass()))

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/**************************************************************************/
/*! 
 @file     readntag203.pde
 @author   KTOWN (Adafruit Industries)
 @license  BSD (see license.txt)
 
 This example will wait for any NTAG203 or NTAG213 card or tag,
 and will attempt to read from it.
 
 This is an example sketch for the Adafruit PN532 NFC/RFID breakout boards

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/*************************************************** 
  This is a library for our optical Fingerprint sensor

  Designed specifically to work with the Adafruit BMP085 Breakout 
  ----> http://www.adafruit.com/products/751

  These displays use TTL Serial to communicate, 2 pins are required to 
  interface
  Adafruit invests time and resources providing this open source code, 
  please support Adafruit and open-source hardware by purchasing 

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#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define OLED_DC         6
#define OLED_CS         7
#define OLED_RESET      8
#define PIN_ENCODER_A   4 //Micro pin 4 - encoder A
#define PIN_ENCODER_B   6