anchor.diff:  
   Example for blinking an LED:
   [source,java]
  ----
   Gpio gpio = new Gpio(new BeagleboneGpioFactory());
   BinaryOutputPin pin = gpio.binaryOutputPin(BeagleboneGPio.P9_12);
   for (int i=0; i<10; i++) {
  
positive.code: = GPIO
  
  This is a Java API library to access the GPIO ports of a Beagleboard Black.
  
  
negative.code:     Thread.sleep(1000);
  }
  pin.low();
  
  Example for reading and waiting for pin value change:
  [source,java]
  