- public LeaderStateChanged(@Nonnull String memberId, @Nullable String leaderId, short leaderPayloadVersion) {
- this.memberId = Preconditions.checkNotNull(memberId);
+ public LeaderStateChanged(final @NonNull String memberId, final @Nullable String leaderId,
+ final short leaderPayloadVersion) {
+ this.memberId = requireNonNull(memberId);