@Override
        public void transfer(ByteBuffer from, File to) throws IOException {
            if (from != null && from.hasRemaining()) {
                try (FileOutputStream fileOutputStream = new FileOutputStream(to, false);
                     FileChannel channel = fileOutputStream.getChannel()) {
                    channel.write(from);
                }
            }
        }
The ID of the broker which owns this instance of {@link LocalTieredStorage}.
storage/src/test/java/org/apache/kafka/server/log/remote/storage/LocalTieredStorage.java