Extract propagated context from message headers

Worker.cs

private IEnumerable<string> ExtractHeaders(IBasicProperties prop, string key)
{
    try
    {
        if (prop.Headers.TryGetValue(key, out var value))
        {
            var bytes = value as byte[] ?? throw new Exception("no value");
            return new[] { System.Text.Encoding.UTF8.GetString(bytes) };
        }
    }
    catch (Exception e)
    {
        _logger.LogError("Error extracting context", e);
    }    
    return Enumerable.Empty<string>();
}