/// <summary>
/// Creates a new named browsing context as child of the given parent.
/// </summary>
/// <param name="name">The name of the child context, if any.</param>
/// <param name="security">The security flags to apply.</param>
/// <returns></returns>
public IBrowsingContext CreateChild(String?name, Sandboxes security)
{
var context = new BrowsingContext(this, security);
if (name is { Length : > 0 })
/// <summary>
/// Opens a new document loaded from the specified request
/// asynchronously in the given context.
/// </summary>
/// <param name="context">The browsing context to use.</param>
/// <param name="request">The request to issue.</param>
/// <param name="cancel">The cancellation token.</param>
/// <returns>The task that creates the document.</returns>
public static Task <IDocument> OpenAsync(this IBrowsingContext context, DocumentRequest request, CancellationToken cancel = default)
{
request = request ?? throw new ArgumentNullException(nameof(request));
context = context ?? BrowsingContext.New();
return(context.NavigateToAsync(request, cancel));
}