docs: public double getLatitudeSpan() {
          if (this.mapView.getWidth() > 0 && this.mapView.getHeight() > 0) {
              LatLong top = fromPixels(0, 0);
              LatLong bottom = fromPixels(0, this.mapView.getHeight());
              return Math.abs(top.latitude - bottom.latitude);
          }
          throw new IllegalStateException(INVALID_MAP_VIEW_DIMENSIONS);
      }