@Override
  public boolean isFamilyEssential(byte[] name) throws IOException {
    return this.filterListBase.isFamilyEssential(name);
  }
Returns true if and only if the fields of the filter that are serialized are equal to the
corresponding fields in other. Used for testing.
hbase-client/src/main/java/org/apache/hadoop/hbase/filter/FilterList.java