+ * Reset `$aggregated_multidimensionals` static variable.
+ *
+ * This is intended only for use by unit tests.
+ *
+ * @since 4.5.0
+ * @access public
+ * @ignore
+ */
+ static public function reset_aggregated_multidimensionals() {
+ self::$aggregated_multidimensionals = array();
+ }
+
+ /**
+ * The ID for the current site when the preview() method was called.