### Question:
ObjectGraphUtils { public static String getNodeId(Object pk, Class<?> objectClass) { StringBuffer strBuffer = new StringBuffer(objectClass.getName()); strBuffer.append(Constants.NODE_ID_SEPARATOR); strBuffer.append(pk); return strBuffer.toString(); }  static String getNodeId(Object pk, Class<?> objectClass); static Object getEntityId(String nodeId); static boolean onAutoGenerateId(Field idField, Object idValue);  }### Answer:
@Test public void testGetNodeId() { nodeId = utils.getNodeId("1", PersonnelDTO.class); Assert.assertEquals("com.impetus.kundera.entity.PersonnelDTO$1", nodeId); }