Function zebra_state::service::read::find::find_chain_intersection

fn find_chain_intersection<C>(
    chain: Option<C>,
    db: &ZebraDb,
    known_blocks: Vec<Hash>
) -> Option<Hash>
where
    C: AsRef<Chain>,

Find the first hash that’s in the peer’s known_blocks, and in chain or db.

Returns None if:

• there is no matching hash in the chain, or
• the state is empty.