geopackage-sdk/src/main/java/mil/nga/geopackage/tiles/retriever/GoogleAPIGeoPackageTileRetriever.java
@Override
    public boolean hasTile(int x, int y, int zoom) {
        return retrieveTileRow(x, y, zoom) != null;
    }
@Override
    public boolean hasTile(int x, int y, int zoom) {
        return retrieveTileRow(x, y, zoom) != null;
    }
{@inheritDoc}