kryo.register( StringBuilder.class, new StringBuilderSerializer( kryo ) );
kryo.register( Collections.EMPTY_LIST.getClass(), new CollectionsEmptyListSerializer() );
kryo.register( Collections.EMPTY_MAP.getClass(), new CollectionsEmptyMapSerializer() );
kryo.register( Collections.EMPTY_SET.getClass(), new CollectionsEmptySetSerializer() );
kryo.register( Collections.singletonList( "" ).getClass(), new CollectionsSingletonListSerializer( kryo ) );
kryo.register( Collections.singleton( "" ).getClass(), new CollectionsSingletonSetSerializer( kryo ) );
kryo.register( Collections.singletonMap( "", "" ).getClass(), new CollectionsSingletonMapSerializer( kryo ) );
kryo.register( Class.class, new ClassSerializer( kryo ) );
kryo.register( BigDecimal.class, new BigDecimalSerializer() );
kryo.register( BigInteger.class, new BigIntegerSerializer() );
kryo.register( GregorianCalendar.class, new GregorianCalendarSerializer() );