presto-main/src/main/java/io/prestosql/sql/analyzer/FeaturesConfig.java/FeaturesConfig/setArrayAggGroupImplementation
class FeaturesConfig:    @Config("arrayagg.implementation")
    public FeaturesConfig setArrayAggGroupImplementation(ArrayAggGroupImplementation groupByMode)
    {
        this.arrayAggGroupImplementation = groupByMode;
        return this;
    }