public void transitionToUpdatePending(long now) {
        this.state = State.UPDATE_PENDING;
        this.lastMetadataFetchAttemptMs = now;
    }
Transition into the UPDATE_PENDING state.  Updates lastMetadataFetchAttemptMs.
clients/src/main/java/org/apache/kafka/clients/admin/internals/AdminMetadataManager.java