protected function createConfigurationDefinition()
    {
        return new FixerConfigurationResolver([
            (new FixerOptionBuilder('sort_algorithm', 'The sorting algorithm to apply.'))
                ->setAllowedValues(['alpha', 'none'])
                ->setDefault('alpha')
                ->getOption(),
            (new FixerOptionBuilder('null_adjustment', 'Forces the position of `null` (overrides `sort_algorithm`).'))
                ->setAllowedValues(['always_first', 'always_last', 'none'])
                ->setDefault('always_first')
                ->getOption(),
        ]);
    }
protected function createConfigurationDefinition()
    {
        return new FixerConfigurationResolver([
            (new FixerOptionBuilder('sort_algorithm', 'The sorting algorithm to apply.'))
                ->setAllowedValues(['alpha', 'none'])
                ->setDefault('alpha')
                ->getOption(),
            (new FixerOptionBuilder('null_adjustment', 'Forces the position of `null` (overrides `sort_algorithm`).'))
                ->setAllowedValues(['always_first', 'always_last', 'none'])
                ->setDefault('always_first')
                ->getOption(),
        ]);
    }
{@inheritdoc}