return num;
        }
        return Runtime.getRuntime().availableProcessors();
    }

    String getPluginVersionFilter();

    default boolean isTargetPluginVersion(final String version) {
        final Pattern pattern;
        if (StringUtil.isBlank(getPluginVersionFilter())) {
            pattern = Pattern.compile("^" + Pattern.quote(ComponentUtil.getSystemHelper().getProductVersion()) + ".*");

     * The value is, e.g.  <br>
     * comment: Version filter for plugins.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getPluginVersionFilter();

    /**
     * Get the value for the key 'plugin.version.filter' as {@link Integer}. <br>
     * The value is, e.g.  <br>
     * comment: Version filter for plugins.