func sendKV(vctx storage.VersionedCtx, versions []*storage.KeyValue, ch chan errorableKV) {
if len(versions) != 0 {
kv, err := vctx.VersionedKeyValue(versions)
if err != nil {
ch <- errorableKV{nil, err}
return
}
if kv != nil {
// fmt.Printf("Sending kv: %v\n", kv)
ch <- errorableKV{kv, nil}
}
}
}
