wrapperToPrimitiveMap.put(Byte.class, Byte.TYPE);
        wrapperToPrimitiveMap.put(Short.class, Short.TYPE);
        wrapperToPrimitiveMap.put(Integer.class, Integer.TYPE);
        wrapperToPrimitiveMap.put(Long.class, Long.TYPE);
        wrapperToPrimitiveMap.put(Float.class, Float.TYPE);
        wrapperToPrimitiveMap.put(Double.class, Double.TYPE);

        primitiveToWrapperMap.put(Boolean.TYPE, Boolean.class);