faker or javafaker in open source soap ui project

Hello everybody, i'm trying to use the java library called "javafaker" but i don't inderstand how to import it.

I've put the javafaker jar in bin/ext directory and this is what i have in soapui log:

Fri Jun 25 13:55:33 CEST 2021:INFO:Adding [............................SoapUI-5.6.0\bin\ext\javafaker-1.0.2.jar] to extensions classpath

But after, i always an error like this when i'm trying to initialise my script:

import Faker

Faker faker = new Faker()
log.info faker.name().firstname()

Someone already use this library ?

Thank's a lot.