# File model/model.rb, line 38
        def wrap_method(*meths)
            meths.each do |meth|
                alias_method "__old_#{meth}", meth
                define_method(meth) do |*a| 
                    r = send("__old_#{meth}", *a);
                    notify_observers
                    r = ObservableArray.new(r) if Array === r
                    return r 
                end
            end
        end