public static List<MetaStackElement> parseList(LuckPermsPlugin plugin, List<String> strings) {
        return strings.stream()
                .map(s -> {
                    MetaStackElement parsed = parseFromString(plugin, s);
                    if (parsed == null) {
                        plugin.getLogger().warn("Unable to parse from: " + s, new IllegalArgumentException());
                    }
                    return parsed;
                })
                .filter(Objects::nonNull)
                .collect(ImmutableCollectors.toList());
    }
Contains the standard {@link MetaStackElement}s provided by LuckPerms.
common/src/main/java/me/lucko/luckperms/common/cacheddata/metastack/StandardStackElements.java