public IQueryable <ContentChannelItem> ChangedContentChannelItemsByDate(DateTime changedSinceDate)
{
RockContext rockContext = new RockContext();
IQueryable <ContentChannelItem> contentChannelItemList = new ContentChannelItemService(rockContext)
.Queryable()
.AsNoTracking()
.Where(cci => (cci.CreatedDateTime >= changedSinceDate && cci.ModifiedDateTime == null) || cci.ModifiedDateTime >= changedSinceDate);
IQueryable <ContentChannelItem> contentChannelItemList2 = new ContentChannelItemService(rockContext)
.Queryable()
.AsNoTracking()
.WhereAttributeValue(rockContext, a => (a.CreatedDateTime >= changedSinceDate && a.ModifiedDateTime == null) || a.ModifiedDateTime >= changedSinceDate);
return(contentChannelItemList.Union(contentChannelItemList2).AsQueryable());
}