    # File lib/RMagick.rb, line 1446
        def []=(*args)
            obj = @images.[]=(*args)
            if obj && obj.respond_to?(:each) then
                is_an_image_array(obj)
                set_current obj.last.__id__
            elsif obj
                is_an_image(obj)
                set_current obj.__id__
            else
                set_current nil
            end
            return obj
        end