class ColumnAggregationResult {

  @Override
  public boolean equals(@Nullable Object obj) {
    if (this == obj) {
      return true;
    }
    if (!(obj instanceof ColumnAggregationResult)) {
      return false;
    }
    ColumnAggregationResult rhs = (ColumnAggregationResult) obj;
    return _aggregation == rhs._aggregation
        && _column.equals(rhs._column)
        && Objects.equals(_value, rhs._value);
  }

  public  ColumnAggregationResult(
      @Nonnull Aggregation aggregation, @Nonnull String column, @Nonnull Object value);

}