@Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        ApplicationReindexing that = (ApplicationReindexing) o;
        return enabled == that.enabled &&
               clusters.equals(that.clusters);
    }
Instant at which reindexing in this was last readied, unless no reindexing is still pending, in which case this is empty.
configserver/src/main/java/com/yahoo/vespa/config/server/application/ApplicationReindexing.java