public static Task<IDmtpChannel> CreateChannelAsync(
	this IDmtpActorObject client,
	string targetId,
	int id,
	Metadata metadata = null
)<ExtensionAttribute>
Public Shared Function CreateChannelAsync ( 
	client As IDmtpActorObject,
	targetId As String,
	id As Integer,
	Optional metadata As Metadata = Nothing
) As Task(Of IDmtpChannel)[<ExtensionAttribute>]
static member CreateChannelAsync : 
        client : IDmtpActorObject * 
        targetId : string * 
        id : int * 
        ?metadata : Metadata 
(* Defaults:
        let _metadata = defaultArg metadata null
*)
-> Task<IDmtpChannel> [缺少 "M:TouchSocket.Dmtp.DmtpActorExtension.CreateChannelAsync(TouchSocket.Dmtp.IDmtpActorObject,System.String,System.Int32,TouchSocket.Core.Metadata)" 的 <param name="client"/> 文档]