### Question:
LongAccessor implements PropertyAccessor<Long> { @Override public final String toString(Object object) { return object != null ? object.toString() : null; }  @Override final Long fromBytes(Class targetClass, byte[] bytes); @Override final byte[] toBytes(Object object); @Override final String toString(Object object); @Override Long fromString(Class targetClass, String s); @Override Long getCopy(Object object); Long getInstance(Class<?> clazz);  }### Answer:
@Test public void testToStringObject() { Assert.assertNull(accessor.toString(null)); Long d1 = new Long(4); String s1 = d1.toString(); String s2 = accessor.toString(d1); Assert.assertTrue(s1.equals(s2)); }