public function get_primary( $args = array(), $sort = true ) {
		$params = wp_parse_args( $args, array( 'primary' => true ) );

		// This parameter is not overridable.
		if ( empty( $params['primary'] ) ) {
			return false;
		}

		$primary_nav = wp_list_filter( $this->nav[ $this->object_id ], $params );

		if ( ! $primary_nav ) {
			return false;
		}

		if ( true !== $sort ) {
			return $primary_nav;
		}

		return $this->sort_nav( $primary_nav );
	}