Method updateManyToMany

src/data/DataDiffer.ts:129–132

* Callback function when update a data and only work in `cbMode: 'byKey'`.

(func: DiffCallbackUpdateManyToMany)

     * Callback function when update a data and only work in `cbMode: 'byKey'`.
     */
     updateManyToMany(func: DiffCallbackUpdateManyToMany): this {
        this._updateManyToMany = func;
        return this;
    }

    /**
     * Callback function when remove a data