code: function _validateAggregationColumnsAndInteractivity (aggregationColumns, clickColumns, overColumns) {
    var aggColumns = (aggregationColumns && Object.keys(aggregationColumns)) || [];
  
    _validateColumnsConcordance(aggColumns, clickColumns, 'featureClick');
    _validateColumnsConcordance(aggColumns, overColumns, 'featureOver');
  }
docs: When there are aggregated columns and interactivity columns they must agree