diff --git a/core/modules/migrate/src/Plugin/migrate/process/MigrationLookup.php b/core/modules/migrate/src/Plugin/migrate/process/MigrationLookup.php
index 1c77272..0c583d8 100644
--- a/core/modules/migrate/src/Plugin/migrate/process/MigrationLookup.php
+++ b/core/modules/migrate/src/Plugin/migrate/process/MigrationLookup.php
@@ -30,6 +30,8 @@
  *   a list of source properties.
  * - stub_id: (optional) Identifies the migration which will be used to create
  *   any stub entities.
+ * - no_stub: (optional) Prevents the creation of a stub entity when no
+ *   relationship is found in the migration map.
  *
  * Examples:
  *
@@ -65,7 +67,7 @@
  *         users:
  *           - author
  *         members:
- *           - author
+ *           - id
  * @endcode
  *
  * If the migration_lookup plugin does not find the source ID in the migration
@@ -99,32 +101,6 @@
  *     source: author
  * @endcode
  *
- * Scenario:
- *   - field_drupal6_pages is a Drupal 6 node reference field.
- *   - field_drupal8_pages is a Drupal 8 entity reference field.
- *
- * @code
- * field_drupal8_pages:
- *   plugin: migration_lookup
- *   migration: ya_node_page
- *   source: field_drupal6_pages
- * @endcode
- *
- * Scenario:
- *   - field_drupal7_pages is a Drupal 7 entity reference field.
- *   - field_drupal8_pages is a Drupal 8 entity reference field.
- *
- * @code
- * field_drupal8_pages:
- *   plugin: iterator
- *   source: field_drupal7_pages
- *   process:
- *     target_id:
- *       plugin: migration_lookup
- *       migration: ya_node_page
- *       source: target_id
- * @endcode
- *
  * @see \Drupal\migrate\Plugin\MigrateProcessInterface
  *
  * @MigrateProcessPlugin(