def _autodetect_std(self, cmd="", search_patterns=None, re_flags=re.I, priority=99):
        """
        Standard method to try to auto-detect the device type. This method will be called for each
        device_type present in SSH_MAPPER_BASE dict ('dispatch' key). It will attempt to send a
        command and match some regular expression from the ouput for each entry in SSH_MAPPER_BASE
        ('cmd' and 'search_pattern' keys).

        Parameters
        ----------
        cmd : str
            The command to send to the remote device after checking cache.
        search_patterns : list
            A list of regular expression to look for in the command's output (default: None).
        re_flags: re.flags, optional
            Any flags from the python re module to modify the regular expression (default: re.I).
        priority: int, optional
            The confidence the match is right between 0 and 99 (default: 99).
        """
        invalid_responses = [
            r"% Invalid input detected",
            r"syntax error, expecting",
            r"Error: Unrecognized command",
            r"%Error",
            r"command not found",
            r"Syntax Error: unexpected argument",
        ]
        if not cmd or not search_patterns:
            return 0
        try:
            # _send_command_wrapper will use already cached results if available
            response = self._send_command_wrapper(cmd)
            # Look for error conditions in output
            for pattern in invalid_responses:
                match = re.search(pattern, response, flags=re.I)
                if match:
                    return 0
            for pattern in search_patterns:
                match = re.search(pattern, response, flags=re_flags)
                if match:
                    return priority
        except Exception:
            return 0
        return 0