// Instantiate a map and platform object:
var platform = new H.service.Platform({
  'apikey': '{YOUR_API_KEY}'
});

// Get an instance of the geocoding service:
var service = platform.getSearchService();

// Call the geocode method with the geocoding parameters,
// the callback and an error callback function (called if a
// communication error occurs):
service.geocode({
  q: '200 S Mathilda Ave, Sunnyvale, CA'
}, (result) => {
  // Add a marker for each location found
  result.items.forEach((item) => {
    map.addObject(new H.map.Marker(item.position));
  });
}, alert);