public virtual async Task <ComposedValue> GetComposedValueAsync(string parameter, CancellationToken cancellationToken)
{
var chatTail = await _chat.GetChatTailAsync(1, cancellationToken).ConfigureAwait(false);
var time = await _time.GetTimeAsync(cancellationToken).ConfigureAwait(false);
var lastChatMessage = chatTail.Messages.SingleOrDefault()?.Text ?? "(no messages)";
var activeUserCount = await _chat.GetActiveUserCountAsync(cancellationToken).ConfigureAwait(false);
return(new ComposedValue($"{parameter} - local", time, lastChatMessage, activeUserCount));
}