public String toBase64() {
        return name
                + (checksum == null ? "null" : Base64.getDecoder().decode(checksum))
                + (lastModified == null ? "null" : lastModified);
    }
public String toBase64 ( ) { return name + ( checksum == null ? "null" : Base64 . getDecoder ( ) . decode ( checksum ) ) + ( lastModified == null ? "null" : lastModified ) ; }
A string representation of this.