You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: vlog.rs
    path of file: ./repos/rdms/src/robt
    
    the code of the file until where you have to start completion: use cbordata::{Cborize, FromCbor, IntoCbor};

use std::{convert::TryFrom, io};

use crate::{dbs, err_at, read_file, util, Error, Result
    
    fn try_from(delta: Delta<D>) -> Result<dbs::Delta<D>> {
        let delta = match delta {
            Delta::N { delta } => delta,
            Delta::R { .. } => err_at!(
                FailConvert, msg: "robt::Delta is reference, can't convert to dbs::Value"
            )?,
        };

        Ok(delta)
    }