No decode2txt script for search attachments

[Steve Dondley]

I'm looking at the documentation at 
https://doc.dovecot.org/settings/plugin/fts-plugin/#fts-decoder

It says "See the decode2text.sh script included in Dovecot for how to 
use this."

I don't have this script installed and can't find it anywhere on my 
Debian Buster server. I'm running dovecot version 2.3.4.1

Not sure if the documentation is outdated or what.