code: function OpenStreetMapGeocoder(httpAdapter, options) {
      this.options = ['language','email','apiKey', 'osmServer'];
  
      OpenStreetMapGeocoder.super_.call(this, httpAdapter, options);
      var osmServer = (options && options.osmServer) || 'http://nominatim.openstreetmap.org';
      OpenStreetMapGeocoder.prototype._endpoint = osmServer + '/search';
      OpenStreetMapGeocoder.prototype._endpoint_reverse = osmServer + '/reverse';
  }
docs: Constructor