code: public void setAddress(TransportAddress address, byte[] transactionID) {
  		byte[] xorMask = new byte[16];
  
  		System.arraycopy(StunMessage.MAGIC_COOKIE, 0, xorMask, 0, 4);
  		System.arraycopy(transactionID, 0, xorMask, 4, 12);
  
  		TransportAddress xorAddress = applyXor(address, xorMask);
  
  		super.setAddress(xorAddress);
  	}
docs: Applies a XOR mask to the specified address and then sets it as the value
  transported by this attribute.
  
  @param address
  the address that we should xor and then record in this
  attribute.
  @param transactionID
  the transaction identifier that we should use when creating
  the XOR mask.