presto-main/src/main/java/io/prestosql/sql/analyzer/FeaturesConfig.java/FeaturesConfig/setForceSingleNodeOutput
class FeaturesConfig:    @Config("optimizer.force-single-node-output")
    public FeaturesConfig setForceSingleNodeOutput(boolean value)
    {
        this.forceSingleNodeOutput = value;
        return this;
    }