geopackage-sdk/src/main/java/mil/nga/geopackage/features/index/FeatureIndexManager.java
public BoundingBox getBoundingBox() {
        BoundingBox bounds = null;
        switch (getIndexedType()) {
            case GEOPACKAGE:
                bounds = featureTableIndex.getBoundingBox();
                break;
            case METADATA:
                bounds = featureIndexer.getBoundingBox();
                break;
            case RTREE:
                bounds = rTreeIndexTableDao.getBoundingBox();
                break;
            default:
                bounds = manualFeatureQuery.getBoundingBox();
        }
        return bounds;
    }
public BoundingBox getBoundingBox() {
        BoundingBox bounds = null;
        switch (getIndexedType()) {
            case GEOPACKAGE:
                bounds = featureTableIndex.getBoundingBox();
                break;
            case METADATA:
                bounds = featureIndexer.getBoundingBox();
                break;
            case RTREE:
                bounds = rTreeIndexTableDao.getBoundingBox();
                break;
            default:
                bounds = manualFeatureQuery.getBoundingBox();
        }
        return bounds;
    }
Query for the feature index bounds

@return bounding box