code: protected function createConfigurationDefinition()
      {
          return new FixerConfigurationResolver([
              (new FixerOptionBuilder('case', 'Apply camel or snake case to test methods'))
                  ->setAllowedValues([self::CAMEL_CASE, self::SNAKE_CASE])
                  ->setDefault(self::CAMEL_CASE)
                  ->getOption(),
          ]);
      }
docs: {@inheritdoc}