code: protected function createConfigurationDefinition()
      {
          $supportedSortTypes = $this->supportedSortTypes;
  
          return new FixerConfigurationResolver([
              (new AliasedFixerOptionBuilder(
                  new FixerOptionBuilder('sort_algorithm', 'whether the statements should be sorted alphabetically or by length, or not sorted'),
                  'sortAlgorithm'
              ))
                  ->setAllowedValues($this->supportedSortAlgorithms)
                  ->setDefault(self::SORT_ALPHA)
                  ->getOption(),
              (new AliasedFixerOptionBuilder(
                  new FixerOptionBuilder('imports_order', 'Defines the order of import types.'),
                  'importsOrder'
              ))
                  ->setAllowedTypes(['array', 'null'])
                  ->setAllowedValues([static function ($value) use ($supportedSortTypes) {
                      if (null !== $value) {
                          $missing = array_diff($supportedSortTypes, $value);
                          if (\count($missing)) {
                              throw new InvalidOptionsException(sprintf(
                                  'Missing sort %s "%s".',
                                  1 === \count($missing) ? 'type' : 'types',
                                  implode('", "', $missing)
                              ));
                          }
  
                          $unknown = array_diff($value, $supportedSortTypes);
                          if (\count($unknown)) {
                              throw new InvalidOptionsException(sprintf(
                                  'Unknown sort %s "%s".',
                                  1 === \count($unknown) ? 'type' : 'types',
                                  implode('", "', $unknown)
                              ));
                          }
                      }
  
                      return true;
                  }])
                  ->setDefault(null)
                  ->getOption(),
          ]);
      }
docs: {@inheritdoc}