code: public CloseableIterator<GeometryIndex> queryIndexedFeatures(int x, int y,
  			int zoom) {
  
  		// Get the web mercator bounding box
  		BoundingBox webMercatorBoundingBox = TileBoundingBoxUtils
  				.getWebMercatorBoundingBox(x, y, zoom);
  
  		// Query for the geometries matching the bounds in the index
  		return queryIndexedFeatures(webMercatorBoundingBox);
  	}
docs: Query for feature results in the x, y, and zoom
  
  @param x
  x coordinate
  @param y
  y coordinate
  @param zoom
  zoom level
  @return feature count
  @since 3.2.0