{"ast_node_type":"other","tokens":[{"end":56,"kind":"keyword","start":0,"text":"debug_assert_eq!(ExpnId::from_hash(hash),"}]}
        debug_assert_eq!(ExpnId::from_hash(hash), None);
    fn expn_hash_to_expn_id(self, sess: &Session, index_guess: u32, hash: ExpnHash) -> ExpnId {
        let index_guess = ExpnIndex::from_u32(index_guess);