docs: def check_snmp(self):
          """Chek if SNMP is available on the server."""
          # Import the SNMP client class
          from glances.snmp import GlancesSNMPClient
  
          # Create an instance of the SNMP client
          clientsnmp = GlancesSNMPClient(host=self.args.client,
                                         port=self.args.snmp_port,
                                         version=self.args.snmp_version,
                                         community=self.args.snmp_community,
                                         user=self.args.snmp_user,
                                         auth=self.args.snmp_auth)
  
          # If we cannot grab the hostname, then exit...
          ret = clientsnmp.get_by_oid("1.3.6.1.2.1.1.5.0") != {}
          if ret:
              # Get the OS name (need to grab the good OID...)
              oid_os_name = clientsnmp.get_by_oid("1.3.6.1.2.1.1.1.0")
              try:
                  self.system_name = self.get_system_name(oid_os_name['1.3.6.1.2.1.1.1.0'])
                  logger.info("SNMP system name detected: {}".format(self.system_name))
              except KeyError:
                  self.system_name = None
                  logger.warning("Cannot detect SNMP system name")
  
          return ret