/// <summary>
/// Configures expectation into the environment.
/// </summary>
/// <param name="config">The configuration.</param>
/// <param name="ct"></param>
/// <returns>The unique identifier for the expectation configuration.</returns>
/// <exception cref="ConfigurationApplicationException"></exception>
public async Task <IConfigurationHandle> ConfigureAsync(Action <IConfigurationContext> config, CancellationToken ct = default)
{
// Gather configuration
var context = new ConfigurationContext(this);
config(context);
return(await context.ApplyAsync(ct));
}