Model/Api.php
public function configureBackend($params, $version, $old_name)
    {
        $url = $this->_getApiServiceUri()
            . 'version/'
            . $version
            . '/backend/'
            . str_replace(' ', '%20', $old_name);

        $result = $this->_fetch(
            $url,
            \Zend_Http_Client::PUT,
            $params
        );

        return $result;
    }
public function configureBackend($params, $version, $old_name)
    {
        $url = $this->_getApiServiceUri()
            . 'version/'
            . $version
            . '/backend/'
            . str_replace(' ', '%20', $old_name);

        $result = $this->_fetch(
            $url,
            \Zend_Http_Client::PUT,
            $params
        );

        return $result;
    }
Configure Backend settings

@param $params
@param $version
@param $old_name
@return bool|mixed
@throws LocalizedException