Code review feedback

* Rename `exampleS` into `exampleSchema`;
* Revert commit about the public keys & co;
4 jobs for adinapoli/issue-403 in 94 minutes and 14 seconds (queued for 6 minutes and 31 seconds)
Status Job ID Name Coverage
  Cabal
passed #17046
cabal

00:38:01

 
  Stack
passed #17047
stack

00:12:44

 
  Bench
manual #17048
allowed to fail manual
bench
 
  Test
passed #17049
test

00:43:27