### Question:
ContractDBUtil { public static <T> T getModel(byte[] value, Class<T> clazz) { if (value == null) { return null; } try { ModelWrapper model = new ModelWrapper(); ProtostuffIOUtil.mergeFrom(value, model, MODEL_WRAPPER_SCHEMA); if (clazz != null && model.getT() != null) { return clazz.cast(model.getT()); } return (T) model.getT(); } catch (Exception e) { e.printStackTrace(); return null; } }  static boolean putModel(String area, byte[] key, T value); static T getModel(byte[] value, Class<T> clazz); static T getModel(String area, byte[] key, Class<T> clazz);  }### Answer:
@Test public void getModel() { }