public function execute()
    {
        try {
            $adminUser = $this->_auth->getUser();

            if ($adminUser->getRefreshToken()) {
                $adminUser->setRefreshToken('')
                    ->save();
            }
            $this->messageManager->addSuccessMessage('Successfully disconnected');
        } catch (\Exception $e) {
            $this->messageManager->addErrorMessage($e->getMessage());
        }

        $this->_redirect('adminhtml/system_config/edit', ['section' => 'connector_developer_settings']);
    }