### Question:
KeystoneAuthHolder implements Serializable { public Calendar getexpiration() { return expiration; }  String getId(); void setId(String id); Calendar getexpiration(); void setexpiration(Calendar expiration); String getServiceUrl(); void setServiceUrl(String serviceUrl);  }### Answer:
@Test public void testGetexpiration() { keystoneAuthHolder.setexpiration(calendar); assertEquals(calendar, keystoneAuthHolder.getexpiration()); }