Drupal 8.0.0 beta 12. More info: https://www.drupal.org/node/2514176

core/modules/migrate/src/MigrateSkipRowException.php

@@ -0,0 +1,15 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\migrate\MigrateSkipRowException.
+ */
+
+namespace Drupal\migrate;
+
+/**
+ * This exception is thrown when a row should be skipped.
+ */
+class MigrateSkipRowException extends \Exception {
+
+}