code: protected function applyFix(\SplFileInfo $file, Tokens $tokens)
      {
          foreach ($tokens as $index => $token) {
              if (!$token->isClassy()) {
                  continue;
              }
  
              $startBraceIndex = $tokens->getNextTokenOfKind($index, ['{']);
              if (!$tokens[$startBraceIndex + 1]->isWhitespace()) {
                  continue;
              }
  
              $this->fixWhitespace($tokens, $startBraceIndex + 1);
          }
      }
docs: {@inheritdoc}