}\n\n  // Getters\n  static get VERSION() {\n    return VERSION\n  }\n\n  static get Default() {\n    return Default\n  }\n\n  // Public\n  refresh() {\n    const autoMethod = this._scrollElement === this._scrollElement.window ?\n      METHOD_OFFSET : METHOD_POSITION\n\n    const offsetMethod = this._config.method === 'auto' ?\n      autoMethod : this._config.method\n\n    const offsetBase = offsetMethod === METHOD_POSITION ?\n      this._getScrollTop() : 0\n\n    this._offsets = []\n    this._targets...