How to make query parameters show up in OpenApi generated from KTOR code by the IntelliJ plugin?

I use the IntelliJ plugin to generate OpenApi documentation for my ktor backend:
https://www.jetbrains.com/help/idea/ktor.html#generate-openapi

However, any query parameters that I use is not included in the generated documentation, for example bankIdLoginAttemptToken in the example below:

Router.kt

fun Routing.bankIdAuth(bankIdController: BankIdController) {
   route("v1") {
       route("bankid") {
           route("auth") {
               get("collect") { bankIdController.collectLogin(this.context) }
           }
       }
   }
}

BankIdController.kt:

suspend fun collectLogin(call: ApplicationCall) {
       val bankIdLoginAttemptToken: String by call.request.queryParameters // This bankIdLoginAttemptToken query parameter does not show up in Swagger
       
       val result = bankIdAuthService.collectLogin(bankIdLoginAttemptToken)
       call.respond(result)
   }