Method emit

dash/dash-renderer/src/actions/utils.js:191–196

(event, ...args)

        }
    }
    emit(event, ...args) {
        const events = this._ev[event];
        if (events) {
            events.forEach(listener => listener.apply(this, args));
        }
    }
    once(event, listener) {
        const remove = this.on(event, (...args) => {
            remove();