@@ -50,14 +50,6 @@ export default class Collection {
*/
this._itemMap = new Map();
- /**
- * Next id which will be assigned to unidentified item while adding it to the collection.
- *
- * @private
- * @property
- */
- this._nextId = 0;
-
/**
* The name of the property which is considered to identify an item.
*