[BUG][kotlin][client] When all auth maps to null, ApiClient.kt does not compile

[WonderCsabo]

Description

If all auth methods maps to null, so ApiClient does not add them, the generated ApiClient will not compile:

authNames.forEach { authName ->
            val auth =
                when (authName) {
                    "openId" -> null
                    else -> throw RuntimeException("auth name $authName not found in available auth names")
                }
            if (auth != null) {
                addAuthorization(authName, auth) // Smart cast to 'Nothing' is impossible, because 'auth' is a complex expression
            }
        }

openapi-generator version

7.0.1

OpenAPI declaration file content or url

components:
  securitySchemes:
    openId:
      type: openIdConnect
      openIdConnectUrl: "???"

Suggest a fix

An easy fix would be to explicitly specify the type of auth variable. This is unnecessary if we have handled auths, bot does not cause any issues either way:

authNames.forEach { authName ->
            val auth: Interceptor? =
                when (authName) {
                    "openId" -> null
                    else -> throw RuntimeException("auth name $authName not found in available auth names")
                }
            if (auth != null) {
                addAuthorization(authName, auth) // Smart cast to 'Nothing' is impossible, because 'auth' is a complex expression
            }
        }

I would happily contribute this, if accepted.

[wing328]

@WonderCsabo thanks for reporting the issue. Can you please file a PR with the suggested fix? Thanks.

[WonderCsabo]

@wing328 PR is up!