def METHOD_NAME(additional_host_info: List[HostInfoGetter]):
    names_taken = [x.name for x in _host_info_gatherers_list]
    for getter in additional_host_info:
        if getter.name in names_taken:
            error_msg = (
                "Key {} used in `additional_host_info` already exists as a "
                "default gatherer function. Do not use the following keys: "
                "{}"
            ).format(getter.name, names_taken)
            raise KeyError(error_msg)