public static XmlReader GetXmlReaderAtWebBodyContents(this System.ServiceModel.Channels.Message message)
{
// see https://blogs.msdn.microsoft.com/endpoint/2011/04/23/wcf-extensibility-message-inspectors/,
return(message.GetWebContentFormat() switch {
// see https://docs.microsoft.com/en-us/archive/blogs/endpoint/wcf-extensibility-message-inspectors, MessageToString
WebContentFormat.Default or WebContentFormat.Xml => message.GetReaderAtBodyContents(),
WebContentFormat.Raw => message.GetXmlReaderAtRawBodyContents(),
var format => throw new ArgumentException(
$"Unsupported {nameof(WebContentFormat)}.'{format}' message, only {WebContentFormat.Raw} and {WebContentFormat.Xml} are supported.",
nameof(message))
});