[Swift 4] unwrapRequired option doesn't do anything

Created by: joeboyscout04

Description

It looks like the unwrapRequired config option doesn't do anything in Swift 4. It is there in Swift 3 generator but not in Swift 4. It's apparent by looking at the mustache templates for Swift 4 that that option doesn't exist anywhere in the templates.

openapi-generator version

3.0.0

Steps to reproduce

Readily reproducible in any project using this option and swift 4.

Related issues/PRs

Coming soon