/// <inheritdoc /> public async Task <XElement> GetXmlValueAsync(CancellationToken ct) { if (_etagEntry != null) { return(Converter.ToElement(Name, _etagEntry.ETag)); } if (_element == null) { if (_propertyStore != null) { var etag = await _propertyStore.GetETagAsync(_entry, ct).ConfigureAwait(false); _element = Converter.ToElement(Name, etag); } else { _element = new EntityTag(false).ToXml(); } } return(_element); }