throw new PluginException("Failed to access " + artifactType, e);
        }
    }

    protected String[] getRepositories() {
        return split(ComponentUtil.getFessConfig().getPluginRepositories(), ",")
                .get(stream -> stream.map(String::trim).toArray(n -> new String[n]));
    }

    protected List<Artifact> loadArtifactsFromRepository(final String url) {

     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getPluginRepositories();

    /**
     * Get the value for the key 'plugin.version.filter'. <br>
     * The value is, e.g.  <br>
     * @return The value of found property. (NotNull: if not found, exception but basically no way)