Method getInstance

/**
 * Returns a reference to a Categories object
 *
 * @param   string  $extension  Name of the categories extension
 * @param   array   $options    An array of options
 *
 * @return  Categories|boolean  Categories object on success, boolean false if an object does not exist
 *
 * @since       1.6
 * @deprecated  5.0 Use the ComponentInterface to get the categories
 */
public static function getInstance($extension, $options = array())
{
    $hash = md5(strtolower($extension) . serialize($options));
    if (isset(self::$instances[$hash])) {
        return self::$instances[$hash];
    }
    $categories = null;
    try {
        $parts = explode('.', $extension, 2);
        $component = Factory::getApplication()->bootComponent($parts[0]);
        if ($component instanceof CategoryServiceInterface) {
            $categories = $component->getCategory($options, \count($parts) > 1 ? $parts[1] : '');
        }
    } catch (SectionNotFoundException $e) {
        $categories = null;
    }
    self::$instances[$hash] = $categories;
    return self::$instances[$hash];
}