protected function getCongfigParameters()
    {
        $this->apiEndpoint = getenv('MP_API_ENDPOINT', null);
        $this->oAuthDiscoveryUrl = getenv('MP_OAUTH_DISCOVERY_ENDPOINT', null);
        $this->mpClientId = getenv('MP_CLIENT_ID', null);
        $this->mpClientSecret = getenv('MP_CLIENT_SECRET', null);
        $this->scope = getenv('MP_API_SCOPE', null);
        $this->mpRedirectURL = getenv('MP_OAUTH_REDIRECT_URL', null);

    }