/** * @class Ext.data.session.ChangesVisitor * @extend Ext.Base * * This class is used internally by `{@link Ext.data.Session#getChanges}` to build * up an object describing changes in the session. It is not intended for public use but * can be used as an example of the visitor `{@link Ext.data.Session#visitData}` * requires. * @protected * @since 5.0.0 */