public ValueTask<HttpResponseResult> RequestAsync(
	HttpRequest request,
	CancellationToken cancellationToken = default
)Public Function RequestAsync ( 
	request As HttpRequest,
	Optional cancellationToken As CancellationToken = Nothing
) As ValueTask(Of HttpResponseResult)abstract RequestAsync : 
        request : HttpRequest * 
        ?cancellationToken : CancellationToken 
(* Defaults:
        let _cancellationToken = defaultArg cancellationToken new CancellationToken()
*)
-> ValueTask<HttpResponseResult> 
override RequestAsync : 
        request : HttpRequest * 
        ?cancellationToken : CancellationToken 
(* Defaults:
        let _cancellationToken = defaultArg cancellationToken new CancellationToken()
*)
-> ValueTask<HttpResponseResult> [缺少 "M:TouchSocket.Http.HttpClient.RequestAsync(TouchSocket.Http.HttpRequest,System.Threading.CancellationToken)" 的 <returns> 文档]