docs: function removeStateListeners() {
    this.state.removeListener('connect', this.onConnect);
    this.state.removeListener('disconnect', this.onDisconnect);
    this.state.removeListener('rejected', this.onRejected);
    this.state.store.removeListener('hit', this.onHit);
    this.state.store.removeListener('miss', this.onMiss);
    this.state.store.removeListener('expired', this.onExpired);
  }