Model/System/Config/Source/GeoIP/Action.php
public function toOptionArray()
    {
        return [
            [
                'value' => \Fastly\Cdn\Model\Config::GEOIP_ACTION_DIALOG,
                'label' => __('Dialog'),
            ],
            [
                'value' => \Fastly\Cdn\Model\Config::GEOIP_ACTION_REDIRECT,
                'label' => __('Redirect')
            ]
        ];
    }
public function toOptionArray()
    {
        return [
            [
                'value' => \Fastly\Cdn\Model\Config::GEOIP_ACTION_DIALOG,
                'label' => __('Dialog'),
            ],
            [
                'value' => \Fastly\Cdn\Model\Config::GEOIP_ACTION_REDIRECT,
                'label' => __('Redirect')
            ]
        ];
    }
Options getter

@return array