#fixed code
                                @Override
    public <T> List<T> populateBeans(final Class<T> type, final String... excludeFieldsName) {
        int size = new RandomDataGenerator().nextInt(1, Short.MAX_VALUE);
        return populateBeans(type, size, excludeFieldsName);
    }
#vulnerable code 
                                @Override
    public <T> List<T> populateBeans(final Class<T> type, final String... excludeFieldsName) {
        byte size = (byte) Math.abs((Byte) DefaultRandomizer.getRandomValue(Byte.TYPE));
        return populateBeans(type, size, excludeFieldsName);
    } 
                            #location 3 
                            #vulnerability type NULL_DEREFERENCE