code: protected function applyFix(\SplFileInfo $file, Tokens $tokens)
      {
          $backtickStarted = false;
          $backtickTokens = [];
          for ($index = $tokens->count() - 1; $index > 0; --$index) {
              $token = $tokens[$index];
              if (!$token->equals('`')) {
                  if ($backtickStarted) {
                      $backtickTokens[$index] = $token;
                  }
  
                  continue;
              }
  
              $backtickTokens[$index] = $token;
              if ($backtickStarted) {
                  $this->fixBackticks($tokens, $backtickTokens);
                  $backtickTokens = [];
              }
              $backtickStarted = !$backtickStarted;
          }
      }
docs: {@inheritdoc}