internalRegisterConverter(Double.class, conv);
internalRegisterConverter(double.class, conv);
conv = new IntConverter();
internalRegisterConverter(Integer.class, conv);
internalRegisterConverter(int.class, conv);
conv = new LongConverter();
internalRegisterConverter(Long.class, conv);
internalRegisterConverter(long.class, conv);
conv = new ShortConverter();
internalRegisterConverter(Short.class, conv);
internalRegisterConverter(short.class, conv);