code: def addToCommits(self, commit: Commit, sender: str):
          
          # BLS multi-sig:
          self._bls_bft_replica.process_commit(commit, sender)
  
          self.commits.addVote(commit, sender)
          self.tryOrder(commit)
docs: Add the specified COMMIT to this replica's list of received
          commit requests.
  
          :param commit: the COMMIT to add to the list
          :param sender: the name of the node that sent the COMMIT