code: protected function applyFix(\SplFileInfo $file, Tokens $tokens)
      {
          for ($index = $tokens->count() - 1; 0 <= $index; --$index) {
              $token = $tokens[$index];
  
              if (!$token->equals([T_STRING, 'dirname'], false)) {
                  continue;
              }
  
              $dirnameInfo = $this->getDirnameInfo($tokens, $index);
  
              if (!$dirnameInfo) {
                  continue;
              }
  
              $prev = $tokens->getPrevMeaningfulToken($dirnameInfo['indexes'][0]);
  
              if (!$tokens[$prev]->equals('(')) {
                  continue;
              }
  
              $prev = $tokens->getPrevMeaningfulToken($prev);
  
              $firstArgumentEnd = $dirnameInfo['end'];
  
              $dirnameInfoArray = [$dirnameInfo];
  
              while ($dirnameInfo = $this->getDirnameInfo($tokens, $prev, $firstArgumentEnd)) {
                  $dirnameInfoArray[] = $dirnameInfo;
  
                  $prev = $tokens->getPrevMeaningfulToken($dirnameInfo['indexes'][0]);
  
                  if (!$tokens[$prev]->equals('(')) {
                      break;
                  }
  
                  $prev = $tokens->getPrevMeaningfulToken($prev);
                  $firstArgumentEnd = $dirnameInfo['end'];
              }
  
              if (\count($dirnameInfoArray) > 1) {
                  $this->combineDirnames($tokens, $dirnameInfoArray);
              }
  
              $index = $prev;
          }
      }
docs: {@inheritdoc}