src/Fixer/FunctionNotation/MethodArgumentSpaceFixer.php
private function findWhitespaceIndexAfterParenthesis(Tokens $tokens, $startParenthesisIndex, $endParenthesisIndex)
    {
        $direction = $endParenthesisIndex > $startParenthesisIndex ? 1 : -1;
        $startIndex = $startParenthesisIndex + $direction;
        $endIndex = $endParenthesisIndex - $direction;

        for ($index = $startIndex; $index !== $endIndex; $index += $direction) {
            $token = $tokens[$index];

            if ($token->isWhitespace()) {
                return $index;
            }

            if (!$token->isComment()) {
                break;
            }
        }

        return null;
    }
private function findWhitespaceIndexAfterParenthesis(Tokens $tokens, $startParenthesisIndex, $endParenthesisIndex)
    {
        $direction = $endParenthesisIndex > $startParenthesisIndex ? 1 : -1;
        $startIndex = $startParenthesisIndex + $direction;
        $endIndex = $endParenthesisIndex - $direction;

        for ($index = $startIndex; $index !== $endIndex; $index += $direction) {
            $token = $tokens[$index];

            if ($token->isWhitespace()) {
                return $index;
            }

            if (!$token->isComment()) {
                break;
            }
        }

        return null;
    }
@param Tokens $tokens
@param int    $startParenthesisIndex
@param int    $endParenthesisIndex

@return null|int