public override void AcceptVisitor(IMappingModelVisitor visitor)
        {
            visitor.ProcessManyToMany(this);

            foreach (var column in columns)
            {
                visitor.Visit(column);
            }
        }
        public override void AcceptVisitor(IMappingModelVisitor visitor)
        {
            visitor.ProcessManyToMany(this);

            foreach (var column in Columns)
            {
                visitor.Visit(column);
            }

            foreach (var filter in ChildFilters)
            {
                visitor.Visit(filter);
            }
        }
 public override void AcceptVisitor(IMappingModelVisitor visitor)
 {
     visitor.ProcessManyToMany(this);
 }