public static Set<HelperPlugin> getHelperPlugins() {
        return Stream.concat(
                Stream.of(getPlugin()),
                Arrays.stream(Helper.plugins().getPlugins())
                        .filter(pl -> pl instanceof HelperPlugin)
                        .map(pl -> (HelperPlugin) pl)
        ).collect(Collectors.toSet());
    }
To be used for testing only
helper/src/main/java/me/lucko/helper/internal/LoaderUtils.java