### Question:
XID { public static void setIpAddress(String ipAddress) { XID.ipAddress = ipAddress; }  static void setPort(int port); static void setIpAddress(String ipAddress); static String generateXID(long tranId); static long getTransactionId(String xid); static int getPort(); static String getIpAddress();  }### Answer:
@Test public void testSetIpAddress() { XID.setIpAddress("127.0.0.1"); assertThat(XID.getIpAddress()).isEqualTo("127.0.0.1"); }