Interface Header<TData>

interface Header<TData> {
    colSpan: number;
    column: Column<TData>;
    depth: number;
    getContext: () => HeaderContext<TData>;
    getLeafHeaders: () => Header<TData>[];
    getResizeHandler: () => (event: unknown) => void;
    getSize: () => number;
    getStart: () => number;
    id: string;
    index: number;
    isPlaceholder: boolean;
    placeholderId?: string;
    rowSpan: number;
    subHeaders: Header<TData>[];
}