@Override
    public boolean successful() {
      return "OK".equals(status) || "ZERO_RESULTS".equals(status);
    }
Specifies the field masks of the details to be returned by PlaceDetails.

@param fields The Field Masks of the fields to return.
@return Returns this {@code PlaceDetailsRequest} for call chaining.
src/main/java/com/google/maps/PlaceDetailsRequest.java