public function passNew(array $expression)
    {
        if (isset($expression['parameters'])) {
            foreach ($expression['parameters'] as $parameter) {
                $usePass = self::DETECT_PARAM_PASS == ($this->detectionFlags & self::DETECT_PARAM_PASS);
                if ($usePass && 'variable' == $parameter['parameter']['type']) {
                    $this->increaseMutations($parameter['parameter']['value']);
                } else {
                    $this->passExpression($parameter['parameter']);
                }
            }
        }
    }