def autodetect(self):
        """
        Try to guess the device_type using SNMP GET based on the SNMP_MAPPER dict. The type which
        is returned is directly matching the name in *netmiko.ssh_dispatcher.CLASS_MAPPER_BASE*
        dict.

        Thus you can use this name to retrieve automatically the right ConnectionClass

        Returns
        -------
        potential_type : str
            The name of the device_type that must be running.
        """
        # Convert SNMP_MAPPER to a list and sort by priority
        snmp_mapper_list = []
        for k, v in SNMP_MAPPER.items():
            snmp_mapper_list.append({k: v})
        snmp_mapper_list = sorted(
            snmp_mapper_list, key=lambda x: list(x.values())[0]["priority"]
        )
        snmp_mapper_list.reverse()

        for entry in snmp_mapper_list:
            for device_type, v in entry.items():
                oid = v["oid"]
                regex = v["expr"]

            # Used cache data if we already queryied this OID
            if self._response_cache.get(oid):
                snmp_response = self._response_cache.get(oid)
            else:
                snmp_response = self._get_snmp(oid)
                self._response_cache[oid] = snmp_response

            # See if we had a match
            if re.search(regex, snmp_response):
                return device_type

        return None