/**
 * Get inner Html of a root node with a selection path which can be used for restore selection.
 * The result string can be used by setHtmlWithSelectionPath() to restore the HTML and selection.
 * @param rootNode Root node to get inner Html from
 * @param range The range of selection. If pass null, no selection path will be added
 * @returns Inner HTML of the root node, followed by HTML comment contains selection path if the given range is valid
 */
export default function getHtmlWithSelectionPath(rootNode: HTMLElement | DocumentFragment, range: Range | null): string;