@Override
    public String toString() {
      StringBuilder sb = new StringBuilder(getClass().getSimpleName());
      sb.append("[policy=").append(policy);
      sb.append(", inViolation=").append(inViolation).append("]");
      return sb.toString();
    }
Returns a singleton referring to a quota which is not in violation.
hbase-client/src/main/java/org/apache/hadoop/hbase/quotas/SpaceQuotaSnapshot.java