@Override
    public Mono<Plugin> getPreset(String presetName) {
        return getPresets()
            .filter(plugin -> Objects.equals(plugin.getMetadata().getName(), presetName))
            .next();
    }
@Test
    void getPresetIfNotFound() {
        var plugin = pluginService.getPreset("not-found-plugin");
        StepVerifier.create(plugin)
            .verifyComplete();
    }