code: private function filterFixtures($fixtures)
      {
          $filtered = [
              'apply' => [],
              'except' => [],
          ];
  
          foreach ($fixtures as $fixture) {
              if (mb_strpos($fixture, '-') !== false) {
                  $filtered['except'][] = str_replace('-', '', $fixture);
              } else {
                  $filtered['apply'][] = $fixture;
              }
          }
  
          return $filtered;
      }
docs: Filters fixtures by splitting them in two categories: one that should be applied and not.
  
  If fixture is prefixed with "-", for example "-User", that means that fixture should not be loaded,
  if it is not prefixed it is considered as one to be loaded. Returns array:
  
  ```php
  [
  'apply' => [
  'User',
  ...
  ],
  'except' => [
  'Custom',
  ...
  ],
  ]
  ```
  @param array $fixtures
  @return array fixtures array with 'apply' and 'except' elements.