core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/Dump/Drupal6DumpBase.php
core/modules/migrate_drupal/lib/Drupal/migrate_drupal/MigrationStorageController.php 
core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Entity/Migration.php
core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Entity/MigrationInterface.php
core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Tests/d6/MigrateSystemConfigsTest.php
core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Plugin/migrate/source/d6/Variable.php
core/modules/migrate_drupal/migrate_drupal.services.yml
core/modules/migrate_drupal/tests/Drupal/migrate_drupal/Tests/D6VariableTest.php
core/modules/migrate_drupal/tests/Drupal/migrate_drupal/Tests/source/VariableTest.php
core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Plugin/migrate/source/Variable.php
core/modules/migrate_drupal/lib/Drupal/migrate_drupal/Plugin/migrate/source/DrupalSqlBase.php