### Question:
DoubleAccessor implements PropertyAccessor<Double> { public Double getInstance(Class<?> clazz) { return Double.MAX_VALUE; }  @Override Double fromBytes(Class targetClass, byte[] data); @Override byte[] toBytes(Object object); @Override String toString(Object object); @Override Double fromString(Class targetClass, String s); @Override Double getCopy(Object object); Double getInstance(Class<?> clazz);  }### Answer:
@Test public void testGetInstance() { Object o = accessor.getInstance(Double.class); Assert.assertNotNull(o); Assert.assertEquals(Double.MAX_VALUE, (Double) o); }