FileInputStream did not closed!!

[epubreader]

        FileInputStream assetStream = new FileInputStream(baseLocalFile);
        BufferedInputStream original = new BufferedInputStream(assetStream);
        original.mark(0);

        Operation[] operations = artifactService.buildOperations(convertedParameters, original, staticAsset.getMimeType());
        InputStream converted = artifactService.convert(original, operations, staticAsset.getMimeType());

        createLocalFileFromInputStream(converted, cacheFile);
        if ("image/gif".equals(mimeType)) {
            mimeType = "image/png";
        }
        return buildModel(cacheFile.getAbsolutePath(), mimeType);