I wanted to implement PlaceAutocompleteFragment based on the docs, in my app but when I add this snippet
<fragment
android:id="@+id/place_autocomplete_fragment"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:name="com.google.android.gms.location.places.ui.PlaceAutocompleteFragment"
/>
the last line throws "cannot resolve symbol 'PlaceAutocompleteFragment'." Why is that?