}

        /* Derive the default browser on BlackBerry */

        if ($this->data->os->name == 'BlackBerry' && !isset($this->data->browser->name) && $this->data->browser->stock) {
            $this->data->browser->name = 'BlackBerry Browser';
            $this->data->browser->hidden = true;
        }

        if ($this->data->os->name == 'BlackBerry OS' && !isset($this->data->browser->name) && $this->data->browser->stock) {
            $this->data->browser->name = 'BlackBerry Browser';
            $this->data->browser->hidden = true;
        }

        if ($this->data->os->name == 'BlackBerry Tablet OS' && !isset($this->data->browser->name) && $this->data->browser->stock) {
            $this->data->browser->name = 'BlackBerry Browser';
            $this->data->browser->hidden = true;
        }

        /* Derive the default browser on Tizen */

        if ($this->data->os->name == 'Tizen' && !isset($this->data->browser->name) && $this->data->browser->stock && in_array($this->data->device->type, [ Constants\DeviceType::MOBILE, Constants\DeviceType::APPLIANCE ])) {
            $this->data->browser->name = 'Samsung Browser';
        }

        /* Derive the default browser on Aliyun OS */

        if ($this->data->os->name == 'Aliyun OS' && !isset($this->data->browser->using) && !isset($this->data->browser->name) && $this->data->browser->stock) {
            $this->data->browser->name = 'Aliyun Browser';
        }

        if ($this->data->os->name == 'Aliyun OS' && $this->data->browser->isUsing('Chrome Content Shell')) {
            $this->data->browser->name = 'Aliyun Browser';
            $this->data->browser->using = null;
            $this->data->browser->stock = true;
        }

        if ($this->data->os->name == 'Aliyun OS' && $this->data->browser->stock) {
            $this->data->browser->hidden = true;
        }

        /* Derive OS/2 nickname */

        if ($this->data->os->name == 'OS/2') {
            if (!empty($this->data->os->version)) {
                if ($this->data->os->version->is('>', '2')) {
                    $this->data->os->version->nickname = 'Warp';
                }
            }
        }

        /* Derive HP TouchPad based on webOS and tablet */

        if ($this->data->os->name == 'webOS' && $this->data->device->type == Constants\DeviceType::TABLET) {
            $this->data->device->manufacturer = 'HP';
            $this->data->device->model = 'TouchPad';
            $this->data->device->identified |= Constants\Id::MATCH_UA;
        }

        /* Derive Windows 10 Mobile edition */

        if ($this->data->os->name == 'Windows Phone') {
            if (!empty($this->data->os->version)) {
                if ($this->data->os->version->is('=', '10')) {
                    $this->data->os->alias = 'Windows';
                    $this->data->os->edition = 'Mobile';
                    $this->data->os->version->alias = '10';
                }
            }
        }

        /* Derive manufacturer and model based on MacOS or OS X */

        if ($this->data->os->name == 'OS X' || $this->data->os->name == 'Mac OS') {
            if (empty($this->data->device->model)) {
                $this->data->device->manufacturer = 'Apple';
                $this->data->device->model = 'Macintosh';
                $this->data->device->identified |= Constants\Id::INFER;
                $this->data->device->hidden = true;
            }
        }

        /* Derive manufacturer and model based on MacOS or OS X */

        if ($this->data->os->name == 'iOS') {
            if (empty($this->data->device->model)) {
                $this->data->device->manufacturer = 'Apple';
                $this->data->device->identified |= Constants\Id::INFER;
                $this->data->device->hidden = true;
            }
        }

        /* Derive iOS and OS X aliases */

        if ($this->data->os->name == 'iOS') {
            if (!empty($this->data->os->version)) {
                if ($this->data->os->version->is('<', '4')) {
                    $this->data->os->alias = 'iPhone OS';
                }
            }
        }

        if ($this->data->os->name == 'OS X') {
            if (!empty($this->data->os->version)) {
                if ($this->data->os->version->is('<', '10.7')) {
                    $this->data->os->alias = 'Mac OS X';
                }

                if ($this->data->os->version->is('>=', '10.12')) {
                    $this->data->os->alias = 'macOS';
                }

                if ($this->data->os->version->is('10.7')) {
                    $this->data->os->version->nickname = 'Lion';
                }

                if ($this->data->os->version->is('10.8')) {
                    $this->data->os->version->nickname = 'Mountain Lion';
                }

                if ($this->data->os->version->is('10.9')) {
                    $this->data->os->version->nickname = 'Mavericks';
                }

                if ($this->data->os->version->is('10.10')) {
                    $this->data->os->version->nickname = 'Yosemite';
                }

                if ($this->data->os->version->is('10.11')) {
                    $this->data->os->version->nickname = 'El Capitan';
                }

                if ($this->data->os->version->is('10.12')) {
                    $this->data->os->version->nickname = 'Sierra';
                }

                if ($this->data->os->version->is('10.13')) {
                    $this->data->os->version->nickname = 'High Sierra';
                }

                if ($this->data->os->version->is('10.14')) {
                    $this->data->os->version->nickname = 'Mojave';
                }

                if ($this->data->os->version->is('10.15')) {
                    $this->data->os->version->nickname = 'Catalina';
                }

                if ($this->data->os->version->is('11')) {
                    $this->data->os->version->nickname = 'Big Sur';
                }

                if ($this->data->os->version->is('12')) {
                    $this->data->os->version->nickname = 'Monterey';
                }
            }
        }
    }
}