PhpCsFixer\Fixer\ArrayNotation\NormalizeIndexBraceFixer::fix PHP Method

    public function fix(\SplFileInfo $file, Tokens $tokens)
    {
        foreach ($tokens as $index => $token) {
            if ($token->isGivenKind(CT::T_ARRAY_INDEX_CURLY_BRACE_OPEN)) {
                $tokens->overrideAt($index, new Token('['));
            } elseif ($token->isGivenKind(CT::T_ARRAY_INDEX_CURLY_BRACE_CLOSE)) {
                $tokens->overrideAt($index, new Token(']'));
            }
        }
    }