presto-verifier/src/main/java/io/prestosql/verifier/VerifierConfig.java/VerifierConfig/setExplainOnly
class VerifierConfig:    @ConfigDescription("Only attempt to explain queries but do not execute them")
    @Config("explain-only")
    public VerifierConfig setExplainOnly(boolean explainOnly)
    {
        this.explainOnly = explainOnly;
        return this;
    }