/// <summary>
/// Shuts down the <see cref="IReporter"/> and <see cref="ISampler"/>.
/// </summary>
public async Task CloseAsync(CancellationToken cancellationToken)
{
if (!_isClosed)
{
await Reporter.CloseAsync(cancellationToken).ConfigureAwait(false);
Sampler.Close();
_isClosed = true;
}
}