WP_REST_Menu_Locations_Controller::prepare_links() WordPress Method

	protected function prepare_links( $location ) {
		$base = sprintf( '%s/%s', $this->namespace, $this->rest_base );

		// Entity meta.
		$links = array(
			'self'       => array(
				'href' => rest_url( trailingslashit( $base ) . $location->name ),
			),
			'collection' => array(
				'href' => rest_url( $base ),
			),
		);

		$locations = get_nav_menu_locations();
		$menu      = isset( $locations[ $location->name ] ) ? $locations[ $location->name ] : 0;
		if ( $menu ) {
			$path = rest_get_route_for_term( $menu );
			if ( $path ) {
				$url = rest_url( $path );

				$links['https://api.w.org/menu'][] = array(
					'href'       => $url,
					'embeddable' => true,
				);
			}
		}

		return $links;
	}