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: entry.rs
    path of file: ./repos/p2panda/p2panda-rs/src/entry
    
    the code of the file until where you have to start completion: // SPDX-License-Identifier: AGPL-3.0-or-later

use std::convert::TryInto;
use std::hash::Hash as StdHash;

use bamboo_rs_core_ed25519_yasmf::Entry as BambooEntry;

use crate::entry::encode::sign_entry;
use crate::entry::error::EntryBuilderError;
use crate::entry::traits::AsEntry;
use crate::entry::{LogId, SeqNum, Signature};
use crate::hash::Hash;
use crate::identity::{KeyPair, PublicKey};
use crate::operation::EncodedOpe
    
    fn from(entry: BambooEntry<&[u8], &[u8]>) -> Self {
        // Convert all hashes into our types
        let backlink: Option<Hash> = entry.backlink.map(|link| (&link).into());
        let skiplink: Option<Hash> = entry.lipmaa_link.map(|link| (&link).into());
        let payload_hash: Hash = (&entry.payload_hash).into();

        // Unwrap as we assume that there IS a signature coming from bamboo struct at this point
        let signature = entry.sig.expect("signature expected").into();

        // Unwrap as the sequence number was already checked when decoding the bytes into the
        // bamboo struct
        let seq_num = entry.seq_num.try_into().expect("invalid sequence number");

        Entry {
            public_key: (&entry.author).into(),
            log_id: entry.log_id.into(),
            seq_num,
            skiplink,
            backlink,
            payload_hash,
            payload_size: entry.payload_size,
            signature,
        }
    }