@Override
  public MetricsTableSource createTable(String table, MetricsTableWrapperAggregate wrapper) {
    return new MetricsTableSourceImpl(table, getTableAggregate(), wrapper);
  }
Factory to create MetricsRegionServerSource when given a MetricsRegionServerWrapper
hbase-hadoop-compat/src/main/java/org/apache/hadoop/hbase/regionserver/MetricsRegionServerSourceFactoryImpl.java