/// <summary>
/// Wraps and accepts the specified visitor.
/// </summary>
/// <param name="subject">The subject.</param>
/// <param name="visitor">The visitor.</param>
/// <returns>
/// A <see cref="Task" /> object representing the async visit operation.
/// </returns>
/// <seealso cref="Visitor" />
public static Task <bool> AcceptVisitorAsync(this IVisitable subject,
object visitor) => subject.AcceptVisitorAsync(new Visitor(visitor));
