byte[][] getFamilies() {
      return this.families;
    }
The (asynchronous) meta table accessor used at client side. Used to read/write region and
assignment information store in <code>hbase:meta</code>.
@since 2.0.0
@see CatalogFamilyFormat
hbase-client/src/main/java/org/apache/hadoop/hbase/ClientMetaTableAccessor.java