public boolean isValid() {
        if (!this.conf.isValid()) {
            return false;
        }

        // The peer set and learner set should not have intersection set.
        final Set<PeerId> intersection = listPeers();
        intersection.retainAll(listLearners());
        if (intersection.isEmpty()) {
            return true;
        }
        LOG.error("Invalid conf entry {}, peers and learners have intersection: {}.", this, intersection);
        return false;
    }
Returns true when the conf entry is valid.

@return if the the entry is valid
jraft-core/src/main/java/com/alipay/sofa/jraft/conf/ConfigurationEntry.java