I am not sure why this class is needed? Can you just do this?
```
val store:Store[K,V2]=HBaseByteArrayStore(quorum, table, columnFamily, valColumnName, createTable)
.convert[K,V2](K=>Array[Byte])(V2=>Array[Byte])?
```

see [this](https://github.com/twitter/summingbird/blob/develop/summingbird-example/src/main/scala/com/twitter/summingbird/example/Storage.scala#L73) for an example of how to convert a store