pub fn prove(&self, version: u64, keys: &[H256]) -> anyhow::Result<BatchTreeProof> {
        self.0.prove(version, keys)
    }
Creates a batch proof for `keys` at the specified tree version.

# Errors

- Returns an error if the version doesn't exist.
- Proxies database errors.
core/lib/zk_os_merkle_tree/src/reader.rs