null\n    this._element = null\n    this._triggerArray = null\n    this._isTransitioning = null\n  }\n\n  // Private\n  _getConfig(config) {\n    config = {\n      ...Default,\n      ...config\n    }\n    config.toggle = Boolean(config.toggle) // Coerce string values\n    Util.typeCheckConfig(NAME, config, DefaultType)\n    return config\n  }\n\n  _getDimension() {\n    const hasWidth = $(this._element).hasClass(DIMENSION_WIDTH)\n    return hasWidth ? DIMENSION_WIDTH : DIMENSION_HEIGHT\n  }\n\n ...

this._queueCallback(complete, this._element, true)\n  }\n\n  _isShown(element = this._element) {\n    return element.classList.contains(CLASS_NAME_SHOW)\n  }\n\n  // Private\n  _configAfterMerge(config) {\n    config.toggle = Boolean(config.toggle) // Coerce string values\n    config.parent = getElement(config.parent)\n    return config\n  }\n\n  _getDimension() {\n    return this._element.classList.contains(CLASS_NAME_HORIZONTAL) ? WIDTH : HEIGHT\n  }\n\n  _initializeChildren() {\n    if (!this._config.parent)...