public static UTF8StreamJsonParser newJsonParser(InputStream in, byte[] buf,
            int offset, int limit) throws IOException
    {
        return newJsonParser(in, buf, offset, limit, false,
                new IOContext(DEFAULT_JSON_FACTORY._getBufferRecycler(), in,
                        false));
    }
Creates a {@link UTF8StreamJsonParser} from the inputstream with the supplied buf {@code inBuffer} to use.
protostuff-json/src/main/java/io/protostuff/JsonIOUtil.java