presto-verifier/src/main/java/io/prestosql/verifier/Validator.java/Validator/executePreAndMainForControl
class Validator:    private QueryResult executePreAndMainForControl()
    {
        return executePreAndMain(
                queryPair.getControl(),
                controlPreQueryResults,
                controlGateway,
                controlUsername,
                controlPassword,
                controlTimeout,
                controlPostQueryResults,
                controlTeardownRetries);
    }