MakeEmptyConfig constructs and returns an empty Config.

VoteLost indicates that the quorum has voted "no".

VotePending indicates that the decision of the vote depends on future votes, i.e.

VoteWon indicates that the quorum has voted "yes".

Config reflects the configuration of a raft group.

AckedIndexer allows looking up a commit index for a given ID of a voter from a corresponding MajorityConfig.

Index is a Raft log position.

JointConfig is a configuration of two groups of (possibly overlapping) majority configurations.

MajorityConfig is a set of IDs that uses majority quorums to make decisions.

VoteResult indicates the outcome of a vote.