cosmetics

[r-cemper]

ALL WORKS PERFECT !

improving test example (eventually just in Docker)
#1)
Escaping double quotes is counterproductive for testing from terminal / console
SET json = {\"name\":\"Ana\",\"age\":32,\"address\":{\"street\":\"X\"}}

this is enough
set json = {"name":"Ana","age":32,"address":{"street":"X"}}

#2)
import + compile of generated classes +
load demo data would be a nice service for testers