private void ExpandGroupsIfConsolidationDisabled()
        {
            foreach (var requirement in _requirements)
            {
                if (requirement.ResolvedIncludeUrls == null)
                {
                    requirement.ResolvedIncludeUrls = _pathResolver.ResolveGroupUrl(requirement.ChosenGroupUrl).ToArray();
                    var embeddedResourceUrl = requirement.ResolvedIncludeUrls.FirstOrDefault(EmbeddedResource.IsVirtualPath);
                    if (embeddedResourceUrl != null)
                    {
                        throw new InvalidOperationException(
                                  @"Cannot include embedded resource because it has not been configured in the Assman.config to be consolidated anywhere.
					Please add an include rule that matches the path '"                     + embeddedResourceUrl + "'.");
                    }
                }
            }
        }