Im writing some rstAPI with Ktor and want it to be autodocumentated
I dont need swagger html generation and stuff, just raw openapi.yml

Searching for “ktor openapi generation” and etc gives me official docs link (https://ktor.io/docs/server-openapi.htm)

But, if i try to write same code in my project

fun main() {
  embeddedServer(
    Netty,
    port = Config.load().main.port,
    host = Config.load().main.host,
    module = Application::module
  ).start(wait = true)
}



fun Application.module() {
  routing {

    route("/api") {
      get {
        call.respond("Hello world!")
      }
    }

    openAPI(path = "/api/openapi", swaggerFile = "documentation.yaml", )


  }
}

it just gives me FileNotFoundException

Exception in thread "main" java.io.FileNotFoundException: Swagger file not found: documentation.yaml
        at io.ktor.server.plugins.openapi.OpenAPIKt.readOpenAPIFile(OpenAPI.kt:57)
        at io.ktor.server.plugins.openapi.OpenAPIKt.openAPI(OpenAPI.kt:27)
        at io.ktor.server.plugins.openapi.OpenAPIKt.openAPI$default(OpenAPI.kt:22)
        at _4Tipsy.TinyCloudAPI.AppKt$module$1.invoke(App.kt:39)
        ...

As i got it, io.ktor:ktor-server-openapi wasnt made for openapi generation

So, please, tell me about any solution