Proof using.
currentTerm_sanity_unchanged.
- apply update_elections_data_client_request_leaderLogs.
- find_apply_lem_hyp handleClientRequest_type. intuition.
Qed.

(* Specifications: *)
Lemma leaderLogs_currentTerm_sanity_timeout :
refined_raft_net_invariant_timeout leaderLogs_currentTerm_sanity.