Issue #2925402 by GeduR, heddn: Remove deprecated (8.3.x) migration process...

Issue #2925402 by GeduR, heddn: Remove deprecated (8.3.x) migration process plugin in favour of migration_lookup

migrate_example/config/install/migrate_plus.migration.beer_node.yml

@@ -14,7 +14,7 @@ process:
   title: name
   nid: bid
   uid:
-    plugin: migration
+    plugin: migration_lookup
     migration: beer_user
     source: aid
   sticky:
@@ -22,7 +22,7 @@ process:
     default_value: 0
   field_migrate_example_country: countries
   field_migrate_example_beer_style:
-    plugin: migration
+    plugin: migration_lookup
     migration: beer_term
     source: terms
   # Some Drupal fields may have multiple components we may want to set

migrate_example/config/install/migrate_plus.migration.beer_term.yml

@@ -60,7 +60,7 @@ process:
   # IDs in map tables, and the migration plugin is the means of performing a
   # lookup in those map tables during processing.
   parent:
-    plugin: migration
+    plugin: migration_lookup
     # Here we reference the migration whose map table we're performing a lookup
     # against. You'll note that in this case we're actually referencing this
     # migration itself, since category parents are imported by the same

migrate_example/config/install/migrate_plus.migration.beer_user.yml

@@ -90,7 +90,7 @@ process:
   # when that migration runs it knows that each incoming beer should overwrite
   # its stub instead of creating a new node.
   field_migrate_example_favbeers:
-    plugin: migration
+    plugin: migration_lookup
     source: beers
     migration: beer_node
 

migrate_example/migrations/beer_comment.yml

@@ -8,11 +8,11 @@ destination:
   plugin: entity:comment
 process:
   pid:
-    plugin: migration
+    plugin: migration_lookup
     migration: beer_comment
     source: cid_parent
   entity_id:
-    plugin: migration
+    plugin: migration_lookup
     migration: beer_node
     source: bid
   entity_type:
@@ -26,7 +26,7 @@ process:
     default_value: node_comments
   subject: subject
   uid:
-    plugin: migration
+    plugin: migration_lookup
     migration: beer_user
     source: aid
   name: name

migrate_example_advanced/config/install/migrate_plus.migration.wine_terms.yml

@@ -26,7 +26,7 @@ process:
       region: migrate_example_wine_regions
       variety: migrate_example_wine_varieties
   parent:
-    plugin: migration
+    plugin: migration_lookup
     migration: wine_terms
     source: category_parent
   weight: ordering

migrate_example_advanced/config/install/migrate_plus.migration.wine_variety_list.yml.txt

@@ -46,7 +46,7 @@ process:
   name: category_name
   description: category_details
   parent:
-    plugin: migration
+    plugin: migration_lookup
     migration: wine_terms
     source: category_parent
 destination:

migrate_example_advanced/config/install/migrate_plus.migration.wine_variety_multi_xml.yml

@@ -54,7 +54,7 @@ process:
   name: category_name
   description: category_details
   parent:
-    plugin: migration
+    plugin: migration_lookup
     migration: wine_terms
     source: category_parent
   field_variety_attributes: category_attributes

src/Plugin/migrate/process/Merge.php

@@ -27,7 +27,7 @@ use Drupal\migrate\Row;
  *      source: field_section
  *      process:
  *        target_id:
- *          plugin: migration
+ *          plugin: migration_lookup
  *          migration: field_collection_field_section_to_paragraph
  *          source: value
  *    temp_images:
@@ -35,7 +35,7 @@ use Drupal\migrate\Row;
  *      source: field_image
  *      process
  *        target_id:
- *          plugin: migration
+ *          plugin: migration_lookup
  *          migration: image_entities_to_paragraph
  *          source: fid
  *    paragraphs_field: