Function showGroupMenu

showGroupMenu(
    group: TabGroupNode,
    anchor: DOMRect | HTMLElement | { x: number; y: number },
    options?: INodeContextMenuOptions,
): () => void
Shows the group pill context menu (rename, color, collapse/expand, ungroup) using the reusable showPopupMenu. Returns an idempotent hide handle. Pass onAction in the options to intercept/undo the dispatched actions, and closeMenu is wired automatically.
Parameters
- group: TabGroupNode
- anchor: DOMRect | HTMLElement | { x: number; y: number }
- options: INodeContextMenuOptions = {}
Returns () => void