Controller/Adminhtml/FastlyCdn/Blocking/CheckBlockingSetting.php
public function execute()
    {
        $result = $this->resultJsonFactory->create();
        try {
            $activeVersion = $this->getRequest()->getParam('active_version');
            $snippet = Config::BLOCKING_SETTING_NAME;
            $req = $this->api->hasSnippet($activeVersion, $snippet);

            if ($req == false) {
                return $result->setData([
                    'status' => false
                ]);
            }

            return $result->setData([
                'status'        => true,
                'req_setting'   => $req
            ]);
        } catch (\Exception $e) {
            return $result->setData([
                'status'    => false,
                'msg'       => $e->getMessage()
            ]);
        }
    }
public function execute()
    {
        $result = $this->resultJsonFactory->create();
        try {
            $activeVersion = $this->getRequest()->getParam('active_version');
            $snippet = Config::BLOCKING_SETTING_NAME;
            $req = $this->api->hasSnippet($activeVersion, $snippet);

            if ($req == false) {
                return $result->setData([
                    'status' => false
                ]);
            }

            return $result->setData([
                'status'        => true,
                'req_setting'   => $req
            ]);
        } catch (\Exception $e) {
            return $result->setData([
                'status'    => false,
                'msg'       => $e->getMessage()
            ]);
        }
    }
Verifies whether or not the blocking settings snippet exists on specified Fastly version

@return Json