public static async Task Create(this ILanguageServerWindowProgress mediator, WorkDoneProgressCreateParams @params, CancellationToken cancellationToken = default)
 {
     await mediator.SendRequest(@params, cancellationToken);
 }
 public static void Cancel(this ILanguageServerWindowProgress mediator, WorkDoneProgressCancelParams @params)
 {
     mediator.SendNotification(@params);
 }
 public static async Task Create(this ILanguageServerWindowProgress mediator, WorkDoneProgressCreateParams @params)
 {
     await mediator.SendRequest(WindowNames.WorkDoneProgressCreate, @params);
 }