+/**
+ * Clear existing update caches for plugins, themes, and core.
+ *
+ * @since 4.1.0
+ */
+function wp_clean_update_cache() {
+ if ( function_exists( 'wp_clean_plugins_cache' ) ) {
+ wp_clean_plugins_cache();
+ } else {
+ delete_site_transient( 'update_plugins' );
+ }
+ wp_clean_themes_cache();
+ delete_site_transient( 'update_core' );
+}
+
+if ( ( ! is_main_site() && ! is_network_admin() ) || ( defined( 'DOING_AJAX' ) && DOING_AJAX ) ) {