pub fn get(self: &Arc<Self>, key: &[u8]) -> Result<Option<Bytes>> {
        let txn = self.mvcc().new_txn(self.clone(), self.options.serializable);
        txn.get(key)
    }
Get a key from the storage. In day 7, this can be further optimized by using a bloom filter.
mini-lsm-mvcc/src/lsm_storage.rs