BuildingCoder.CmdCollectorPerformance.GetElementViews C# (CSharp) Method

        public static List<View> GetElementViews(
            List<Element> a,
            List<View> views)
        {
            List<View> returnViews = new List<View>();
              foreach( View view in views )
              {
            FilteredElementCollector coll
              = new FilteredElementCollector(
            view.Document, view.Id );

            coll = coll.WhereElementIsNotElementType();

            List<Element> elementList = coll.ToList();

            foreach( Element e1 in a )
            {
              Element e2 = elementList.Where(
            x => x.Id == e1.Id )
            .FirstOrDefault();

              if( e2 != null
            && null == returnViews.Where(
              x => x.Id == view.Id ).FirstOrDefault() )
              {
            returnViews.Add( view );
              }
            }
              }
              return returnViews;
        }