presto-main/src/main/java/io/prestosql/sql/analyzer/FeaturesConfig.java/FeaturesConfig/setOptimizeMixedDistinctAggregations
class FeaturesConfig:    @Config("optimizer.optimize-mixed-distinct-aggregations")
    public FeaturesConfig setOptimizeMixedDistinctAggregations(boolean value)
    {
        this.optimizeMixedDistinctAggregations = value;
        return this;
    }