ktor-client question --- I’m trying to make an HTTP POST request with an xml body and no magic serialization, and to set the ContentType header. I assumed I could do, e.g.

val xmlBody: String = [prepare body]

<http://client.post|client.post>([uri]) {
    contentType(ContentType.Text.Xml)
    body = xmlBody
}

However, I’m getting,

io.ktor.http.UnsafeHeaderException: Header(s) [Content-Type] are controlled by the engine and cannot be set explicitly

What’s the correct way to specify the Content-Type header, if not by explicitly calling contentType()?