/**
     * Gets all tags currently applied to the user, also update the list of available tags
     *
     * @access public
     * @return array Tags
     */

    public function get_tags( $contact_id ) {

        $this->connect();

        $result = $this->app->api( 'contact/view?id=' . $contact_id );

        return $result->tags;

    }

    /**
     * Applies tags to a contact
     *
     * @access public
     * @return bool
     */

    public function apply_tags( $tags, $contact_id ) {

        $this->connect();

        $result = $this->app->api(
            'contact/tag_add', array(
                'id'   => $contact_id,
                'tags' => $tags,
            )
        );

        return true;

    }


    /**
     * Removes tags from a contact
     *
     * @access public
     * @return bool
     */

    public function remove_tags( $tags, $contact_id ) {

        $this->connect();

        $result = $this->app->api(
            'contact/tag_remove', array(
                'id'   => $contact_id,
                'tags' => $tags,
            )
        );

        return true;

    }