onPoiDeselected method
Get notified when the selected POI is deselected.
Implementation
void onPoiDeselected(OnPoiDeselectedCallback callback) {
  _onPoiDeselectedCallback = callback;
}Get notified when the selected POI is deselected.
void onPoiDeselected(OnPoiDeselectedCallback callback) {
  _onPoiDeselectedCallback = callback;
}