public ContentGroup GetInstanceContentGroup(ContentGroupManager cgm, Log log, int instanceId, int?pageId)
{
var mci = ModuleController.Instance;
var tabId = pageId ?? mci.GetTabModulesByModule(instanceId)[0].TabID;
log.Add($"find content-group for mid#{instanceId} and tab#{tabId}");
var settings = mci.GetModule(instanceId, tabId, false).ModuleSettings;
var maybeGuid = settings[Settings.ContentGroupGuidString];
Guid.TryParse(maybeGuid?.ToString(), out var groupGuid);
var previewTemplateString = settings[Settings.PreviewTemplateIdString]?.ToString();
var templateGuid = !string.IsNullOrEmpty(previewTemplateString)
? Guid.Parse(previewTemplateString)
: new Guid();
return(cgm.GetContentGroupOrGeneratePreview(groupGuid, templateGuid));
}
