Interface RxTxBase

interface RxTxBase {
    addEventListener?: <K extends "up" | "down">(
        type: K,
        listener: (ev: RxTxEventMap[K]) => any,
        options?: AddEventListenerOptions,
    ) => void;
    attributes?: FwFace.Attributes;
    removeEventListener?: <K extends "up" | "down">(
        type: K,
        listener: (ev: RxTxEventMap[K]) => any,
        options?: EventListenerOptions,
    ) => void;
}