// getLocked performs a get operation assuming that the caller
// is already holding the mutex.
func (in *InMem) getLocked(key Key, data llrb.Tree) ([]byte, error) {
if len(key) == 0 {
return nil, emptyKeyError()
}
val := data.Get(proto.RawKeyValue{Key: key})
if val == nil {
return nil, nil
}
return val.(proto.RawKeyValue).Value, nil
}
