private function parseQueryVar( $wpvar = '' ) {
        if ( ! is_array( $this->query_vars[$wpvar] ) ) {
            $this->query_vars[$wpvar] = (string) $this->query_vars[$wpvar];
        } else {
            foreach ( $this->query_vars[$wpvar] as $vkey => $v ) {
                if ( ! is_object( $v ) ) {
                    $this->query_vars[$wpvar][$vkey] = (string) $v;
                }
            }
        }
        if ( isset( $this->post_type_query_vars[$wpvar] ) ) {
            $this->query_vars['post_type'] = $this->post_type_query_vars[$wpvar];
            $this->query_vars['name'] = $this->query_vars[$wpvar];
        }
    }