public override async Task <SpecialCommandResult> Execute()
{
string source = WebDavPath.Clean(Parames.Count == 1 ? Path : Parames[0]);
string target = WebDavPath.Clean(Parames.Count == 1 ? Parames[0] : Parames[1]);
var res = await Cloud.Copy(source, target);
return(new SpecialCommandResult(res));
}