How to use the esrally.utils.console.format.link function in esrally

def main():
    check_python_version()
    log.install_default_log_config()
    log.configure_logging()
    console.init()

    parser = argparse.ArgumentParser(prog=PROGRAM_NAME,
                                     description=BANNER + "\n\n Rally daemon to support remote benchmarks",
                                     epilog="Find out more about Rally at {}".format(console.format.link(doc_link())),
                                     formatter_class=argparse.RawDescriptionHelpFormatter)
    parser.add_argument('--version', action='version', version="%(prog)s " + version.version())

    subparsers = parser.add_subparsers(
        title="subcommands",
        dest="subcommand",
        help="")
    subparsers.required = True

    start_command = subparsers.add_parser("start", help="Starts the Rally daemon")
    restart_command = subparsers.add_parser("restart", help="Restarts the Rally daemon")
    for p in [start_command, restart_command]:
        p.add_argument(
            "--node-ip",
            required=True,
            help="The IP of this node.")

def print_help_on_errors():
    heading = "Getting further help:"
    console.println(console.format.bold(heading))
    console.println(console.format.underline_for(heading))
    console.println("* Check the log files in {} for errors.".format(paths.logs()))
    console.println("* Read the documentation at {}".format(console.format.link(doc_link())))
    console.println("* Ask a question on the forum at {}".format(console.format.link("https://discuss.elastic.co/c/elasticsearch/rally")))
    console.println("* Raise an issue at {} and include the log files in {}."
                    .format(console.format.link("https://github.com/elastic/rally/issues"), paths.logs()))

def warn_if_plugin_build_task_is_in_use(config):
            if "source" not in config:
                return
            for k, v in config["source"].items():
                plugin_match = re.match(r"^plugin\.([^.]+)\.build\.task$",k)
                if plugin_match != None and len(plugin_match.groups()) > 0 :
                    plugin_name = plugin_match.group(1)
                    new_key = "plugin.{}.build.command".format(plugin_name)
                    out("\n"
                        "WARNING:"
                        "  The build.task property for plugins has been obsoleted in favor of the full build.command."
                        "  You will need to edit the plugin [{}] section in {} and change from:"
                        "  [{} = {}] to [{} = ]."
                        "  Please refer to the documentation for more details:"
                        "  {}.\n".format(plugin_match.group(1), config_file.location, k, v, new_key,
                                         console.format.link(doc_link("elasticsearch_plugins.html#running-a-benchmark-with-plugins"))))

if not client_cert and not client_key:
                self.logger.info("SSL client authentication: off")
            elif bool(client_cert) != bool(client_key):
                self.logger.error(
                    "Supplied client-options contain only one of client_cert/client_key. "
                )
                defined_client_ssl_option = "client_key" if client_key else "client_cert"
                missing_client_ssl_option = "client_cert" if client_key else "client_key"
                console.println(
                    "'{}' is missing from client-options but '{}' has been specified.\n"
                    "If your Elasticsearch setup requires client certificate verification both need to be supplied.\n"
                    "Read the documentation at {}\n".format(
                        missing_client_ssl_option,
                        defined_client_ssl_option,
                        console.format.link(doc_link("command_line_reference.html#client-options")))
                )
                raise exceptions.SystemSetupError(
                    "Cannot specify '{}' without also specifying '{}' in client-options.".format(
                        defined_client_ssl_option,
                        missing_client_ssl_option))
            elif client_cert and client_key:
                self.logger.info("SSL client authentication: on")
                self.ssl_context.load_cert_chain(certfile=client_cert,
                                                 keyfile=client_key)
        else:
            self.logger.info("SSL support: off")
            self.client_options["scheme"] = "http"

        if self._is_set(self.client_options, "basic_auth_user") and self._is_set(self.client_options, "basic_auth_password"):
            self.logger.info("HTTP basic authentication: on")
            self.client_options["http_auth"] = (self.client_options.pop("basic_auth_user"), self.client_options.pop("basic_auth_password"))

def print_help_on_errors():
    heading = "Getting further help:"
    console.println(console.format.bold(heading))
    console.println(console.format.underline_for(heading))
    console.println("* Check the log files in %s for errors." % application_log_dir_path())
    console.println("* Read the documentation at %s" % console.format.link(DOC_LINK))
    console.println("* Ask a question on the forum at %s" % console.format.link("https://discuss.elastic.co/c/elasticsearch/rally"))
    console.println("* Raise an issue at %s and include the log files in %s." %
                    (console.format.link("https://github.com/elastic/rally/issues"), application_log_dir_path()))

def warn_if_plugin_build_task_is_in_use(config):
            if "source" not in config:
                return
            for k, v in config["source"].items():
                plugin_match = re.match('^plugin\.([^.]+)\.build\.task$',k)
                if plugin_match != None and len(plugin_match.groups()) > 0 :
                    plugin_name = plugin_match.group(1)
                    new_key = "plugin.{}.build.command".format(plugin_name)
                    out("\n"
                        "WARNING:"
                        "  The build.task property for plugins has been obsoleted in favor of the full build.command."
                        "  You will need to edit the plugin [{}] section in {} and change from:"
                        "  [{} = {}] to [{} = ]."
                        "  Please refer to the documentation for more details:"
                        "  {}.\n".format(plugin_match.group(1), config_file.location, k, v, new_key,
                                         console.format.link("%selasticsearch_plugins.html#running-a-benchmark-with-plugins" % DOC_LINK)))

value = int(v)
        if value <= 0:
            raise argparse.ArgumentTypeError("must be positive but was %s" % value)
        return value

    # try to preload configurable defaults, but this does not work together with `--configuration-name` (which is undocumented anyway)
    cfg = config.Config()
    if cfg.config_present():
        cfg.load_config()
        preserve_install = cfg.opts("defaults", "preserve_benchmark_candidate", default_value=False, mandatory=False)
    else:
        preserve_install = False

    parser = argparse.ArgumentParser(prog=PROGRAM_NAME,
                                     description=BANNER + "\n\n You know for benchmarking Elasticsearch.",
                                     epilog="Find out more about Rally at %s" % console.format.link(DOC_LINK),
                                     formatter_class=argparse.RawDescriptionHelpFormatter)
    parser.add_argument('--version', action='version', version="%(prog)s " + version.version())

    subparsers = parser.add_subparsers(
        title="subcommands",
        dest="subcommand",
        help="")

    race_parser = subparsers.add_parser("race", help="Run the benchmarking pipeline. This sub-command should typically be used.")
    # change in favor of "list telemetry", "list tracks", "list pipelines"
    list_parser = subparsers.add_parser("list", help="List configuration options")
    list_parser.add_argument(
        "configuration",
        metavar="configuration",
        help="The configuration for which Rally should show the available options. "
             "Possible values are: telemetry, tracks, pipelines, races, cars, elasticsearch-plugins",

def print_help_on_errors():
    heading = "Getting further help:"
    console.println(console.format.bold(heading))
    console.println(console.format.underline_for(heading))
    console.println("* Check the log files in {} for errors.".format(paths.logs()))
    console.println("* Read the documentation at {}".format(console.format.link(doc_link())))
    console.println("* Ask a question on the forum at {}".format(console.format.link("https://discuss.elastic.co/c/elasticsearch/rally")))
    console.println("* Raise an issue at {} and include the log files in {}."
                    .format(console.format.link("https://github.com/elastic/rally/issues"), paths.logs()))

def print_help_on_errors():
    heading = "Getting further help:"
    console.println(console.format.bold(heading))
    console.println(console.format.underline_for(heading))
    console.println("* Check the log files in {} for errors.".format(paths.logs()))
    console.println("* Read the documentation at {}".format(console.format.link(doc_link())))
    console.println("* Ask a question on the forum at {}".format(console.format.link("https://discuss.elastic.co/c/elasticsearch/rally")))
    console.println("* Raise an issue at {} and include the log files in {}."
                    .format(console.format.link("https://github.com/elastic/rally/issues"), paths.logs()))