presto-main/src/main/java/io/prestosql/server/security/KerberosConfig.java/KerberosConfig/setKerberosConfig
class KerberosConfig:    @Config("http.authentication.krb5.config")
    public KerberosConfig setKerberosConfig(File kerberosConfig)
    {
        this.kerberosConfig = kerberosConfig;
        return this;
    }