public function getUsedAggregatorsAliases(array $data)
    {
        $aggregators = $this->retrieveUsedAggregators($data[ExportType::AGGREGATOR_KEY]);
        
        return array_keys(iterator_to_array($aggregators));
    }
public function getUsedAggregatorsAliases(array $data)
    {
        $aggregators = $this->retrieveUsedAggregators($data[ExportType::AGGREGATOR_KEY]);
        
        return array_keys(iterator_to_array($aggregators));
    }
public function getUsedAggregatorsAliases ( array $ data ) { $ aggregators = $ this -> retrieveUsedAggregators ( $ data [ ExportType :: AGGREGATOR_KEY ] ) ; return array_keys ( iterator_to_array ( $ aggregators ) ) ; }
get the aggregators typse used in the form export data

@param array $data the data from the export form
@return string[]
get the aggregators typse used in the form export data