export declare function getClosestAccordion(el: HTMLElement | undefined): HTMLElement | undefined;
export declare function getSiblingButtons(item: HTMLElement): HTMLElement[] | undefined;
export declare function focusFirstSiblingOf(item: HTMLElement): void;
export declare function focusLastSiblingOf(item: HTMLElement): void;
export declare function focusNextSiblingOf(item: HTMLElement): void;
export declare function focusPreviousSiblingOf(item: HTMLElement): void;
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