@Override
   public boolean isMarshallable(Object o) {
      return o instanceof Serializable;
   }
@Test
   public void testBoxedPrimitivesAndArray() throws Exception {
      JavaSerializationMarshaller marshaller = new JavaSerializationMarshaller();
      isMarshallable(marshaller, Byte.MAX_VALUE);
      isMarshallable(marshaller, Short.MAX_VALUE);
      isMarshallable(marshaller, Integer.MAX_VALUE);
      isMarshallable(marshaller, Long.MAX_VALUE);
      isMarshallable(marshaller, Float.MAX_VALUE);
      isMarshallable(marshaller, Double.MAX_VALUE);
      isMarshallable(marshaller, 'c');
      isMarshallable(marshaller, "String");
   }