GooglePlacesAutoCompleteTextFormField(
        textEditingController: controller,
        googleAPIKey: "YOUR_GOOGLE_API_KEY",
        proxyURL: "https://your-proxy.com/", // only needed if you build for the web
        debounceTime: 400, // defaults to 600 ms
        countries: ["de"], // optional, by default the list is empty (no restrictions)
        isLatLngRequired: true, // if you require the coordinates from the place details
        getPlaceDetailWithLatLng: (prediction) {
         // this method will return latlng with place detail
        print("Coordinates: (${prediction.lat},${prediction.lng})");
        }, // this callback is called when isLatLngRequired is true
        itmClick: (prediction) {
         controller.text = prediction.description;
          controller.selection = TextSelection.fromPosition(TextPosition(offset: prediction.description.length));
        }
    )