code: @Override
    public FilterSupportStatus isFilterSupported(
        FilterAdapterContext context,
        FamilyFilter filter) {
      ByteArrayComparable comparator = filter.getComparator();
      if (!(comparator instanceof RegexStringComparator) && !(comparator instanceof BinaryComparator)) {
        return FilterSupportStatus.newNotSupported(comparator.getClass().getName()
            + " comparator is not supported");
      }
      if (filter.getOperator() != CompareFilter.CompareOp.EQUAL) {
        return FilterSupportStatus.newNotSupported(filter.getOperator()
            + " operator is not supported");
      }
      return FilterSupportStatus.SUPPORTED;
    }
docs: {@inheritDoc}