/**
* Gets the inner XML structure as a string from a XML element
* (like innerHTML but for XML elements - eg. in SVG)
*
* @param XMLNode - The XML node to grab the inner XML structure from
* @return The inner XML structure
*
* @example
*
* ```ts
* // String is already HTML so it is returned as is
* innerXML();
* // -> ''
* ```
*/
export default function innerXML(XMLElement: Element): string;