private function getMethodArguments(StepNode $step, $tokenCount)
    {
        $args = array();
        for ($i = 0; $i < $tokenCount; $i++) {
            $args[] = '$arg' . ($i + 1);
        }

        foreach ($step->getArguments() as $argument) {
            $args[] = $this->getMethodArgument($argument);
        }

        return $args;
    }