Problem/Motivation
PHPStan baseline is currently skipping multiple Call to an undefined method errors in the migration system
Proposed resolution
Fix the errors in the following
- core/modules/migrate/tests/src/Kernel/MigrateTestBase.php
- core/modules/migrate_drupal/tests/src/Kernel/d6/MigrateDrupal6AuditIdsTest.php
- core/modules/migrate_drupal/tests/src/Kernel/d7/MigrateDrupal7AuditIdsTest.php
- core/modules/migrate_drupal/tests/src/Traits/CreateTestContentEntitiesTrait.php
- core/modules/migrate_drupal_ui/tests/src/Functional/MigrateUpgradeTestBase.php
- core/modules/migrate_drupal_ui/tests/src/Functional/d7/FilePathTest.php