[BUG] [Elm] Asterisks being allowed in Custom Types (from enums)

[Erudition]

Bug Report Checklist

• [X] Have you provided a full/minimal spec to reproduce the issue?

• Using the full Stripe API spec.

• [X] Have you validated the input using an OpenAPI validator (example)?

• I used the CLI with validate and it found no issues.

• [x] Have you tested with the latest master to confirm the issue still exists?

• Yes

• [X] Have you searched for related issues/PRs?
• [X] What's the actual output vs expected output?

Description

openapi-generator version

Latest master

OpenAPI declaration file content or url

https://raw.githubusercontent.com/stripe/openapi/master/openapi/spec3.json

Generation Details

java -jar modules/openapi-generator-cli/target/openapi-generator-cli.jar generate    -i https://raw.githubusercontent.com/stripe/openapi/master/openapi/spec3.json    -g elm    -o ./elm-stripeFix

Puts out the invalid code:

type EnabledEvents
    = EnabledEvents*
    | EnabledEventsAccountApplicationAuthorized
    | EnabledEventsAccountApplicationDeauthorized
    | EnabledEventsAccountExternalAccountCreated
    | EnabledEventsAccountExternalAccountDeleted
    | -- ...

But asterisks are not valid in elm identifiers.

Suggest a fix

Replace with Underscore, if using the same name is truly needed. Otherwise, pick a more descriptive name.

For example, in this case the * value seems to mean "all", so EnabledEventsAll would be ideal.

(That said, I wish these types were all in their own modules, so we could just use qualified names like EnabledEvents.All rather than having long prefixes on every value)