EnterElement
An interface describing the element type of the Enter Selection group elements created when invoking selection.enter().
interface EnterElement {
namespaceURI: string;
ownerDocument: Document;
appendChild(newChild: Node): Node;
insertBefore(newChild: Node, refChild: Node): Node;
querySelector(selectors: string): Element;
querySelectorAll(selectors: string): NodeListOf<Element>;
}