public static Expression AssignCollectionAccessAliases(Expression expr)
 {
     CollectionAliasVisitor visitor = new CollectionAliasVisitor();
     return visitor.Visit(expr);
 }
        public static Expression AssignCollectionAccessAliases(Expression expr)
        {
            CollectionAliasVisitor visitor = new CollectionAliasVisitor();

            return(visitor.Visit(expr));
        }