@SuppressWarnings("serial") public IMGCoverageResponseDelegate(GeoServer geoserver) { super( geoserver, Arrays.asList("png", "jpeg", "JPEG", "PNG"), // output formats new HashMap<String, String>() { // file extensions { put("png", "png"); put("jpeg", "jpeg"); put("JPEG", "jpeg"); put("PNG", "png"); put("image/png", "png"); put("image/jpeg", "jpeg"); } }, new HashMap<String, String>() { // mime types { put("png", "image/png"); put("jpeg", "image/jpeg"); put("PNG", "image/png"); put("JPEG", "image/jpeg"); } }); }