@Override
      int getNumReportedRegions(TableName table, QuotaSnapshotStore<TableName> tableStore) {
        throw new RuntimeException("Should should not reach here");
      }
Non-HBase cluster unit tests for {@link TablesWithQuotas}.
hbase-server/src/test/java/org/apache/hadoop/hbase/quotas/TestTablesWithQuotas.java