code: func BootstrapWithMultiStores(cluster *Cluster, n int) (storeIDs, peerIDs []uint64, regionID uint64, leaderPeer uint64) {
  	storeIDs = cluster.AllocIDs(n)
  	peerIDs = cluster.AllocIDs(n)
  	leaderPeer = peerIDs[0]
  	regionID = cluster.AllocID()
  	for _, storeID := range storeIDs {
  		cluster.AddStore(storeID, fmt.Sprintf("store%d", storeID))
  	}
  	cluster.Bootstrap(regionID, storeIDs, peerIDs, leaderPeer)
  	return
  }
docs: // BootstrapWithMultiStores initializes a Cluster with 1 Region and n Stores.