@Override
    public String toString() {
        if (compressionInfo.getCompressionType() == CompressionType.UNCOMPRESSED)
            return data.toString();
        else
            return withCompression(CompressionType.UNCOMPRESSED).toString();
    }
Returns a copy of this payload where the data is compressed using the given compression
config/src/main/java/com/yahoo/vespa/config/protocol/Payload.java