PhpCsFixer\Fixer\ReturnNotation\SimplifiedNullReturnFixer::needFixing PHP Method

    private function needFixing(Tokens $tokens, $index)
    {
        $content = '';
        while (!$tokens[$index]->equals(';')) {
            $index = $tokens->getNextMeaningfulToken($index);
            $content .= $tokens[$index]->getContent();
        }
        $content = rtrim($content, ';');
        $content = ltrim($content, '(');
        $content = rtrim($content, ')');
        return 'null' === strtolower($content);
    }