client.submitFormWithBinaryData {
    url { encodedPath = "my_url" }
    formData {
        append("my_key", "my_key_value")
    }
}

kotlinx.serialization.SerializationException: Serializer for class 'MultiPartFormDataContent' is not found.

val client = HttpClient {
        install(JsonFeature) {
            serializer = KotlinxSerializer(jsonConfig)
        }

        install(DefaultRequest) {
            if (url.host == "localhost") {
                // Workaround to set a sort of a base url
                url.host = "my_host"
                url.protocol = URLProtocol.HTTPS
                url.encodedPath = "my_path" + url.encodedPath
            }
        }


        install(Logging) {
            logger = Logger.SIMPLE
            level = LogLevel.ALL
        }
}

body = MultiPartFormDataContent( param.toFormData())