# File test/test_properties.rb, line 77
    def test_map_modified_check
      foo_map = @properties.map('foo')
      bar_map = @properties.map('bar')
      @properties.set_map('foo', foo_map)
      assert_exception(RuntimeError) {
        @properties.set_map('bar', bar_map)
      }
      bar_map.modified_count = foo_map.modified_count
      @properties.set_map('bar', bar_map)
    end