code: protected function applyFix(\SplFileInfo $file, Tokens $tokens)
      {
          $tokenCount = \count($tokens);
  
          for ($index = 1; $index < $tokenCount; ++$index) {
              if (!$tokens[$index]->isGivenKind(T_FUNCTION)) {
                  continue;
              }
  
              $functionOpenIndex = $tokens->getNextTokenOfKind($index, ['{', ';']);
              if ($tokens[$functionOpenIndex]->equals(';')) { // abstract function
                  $index = $functionOpenIndex - 1;
  
                  continue;
              }
  
              $functionCloseIndex = $tokens->findBlockEnd(Tokens::BLOCK_TYPE_CURLY_BRACE, $functionOpenIndex);
  
              $tokensAdded = $this->fixFunction(
                  $tokens,
                  $index,
                  $functionOpenIndex,
                  $functionCloseIndex
              );
  
              $index = $functionCloseIndex + $tokensAdded;
              $tokenCount += $tokensAdded;
          }
      }
docs: {@inheritdoc}