7 methods override DefaultPluginManager::findDefinitions() in Drupal 8

ConfigMapperManager::findDefinitions in core/modules/config_translation/src/ConfigMapperManager.php

Finds plugin definitions.

EntityTypeManager::findDefinitions in core/lib/Drupal/Core/Entity/EntityTypeManager.php

Finds plugin definitions.

HelpTopicPluginManager::findDefinitions in core/modules/help_topics/src/HelpTopicPluginManager.php

Finds plugin definitions.

MigrateFieldPluginManager::findDefinitions in core/modules/migrate_drupal/src/Plugin/MigrateFieldPluginManager.php

Finds plugin definitions.

MigrateSourcePluginManager::findDefinitions in core/modules/migrate/src/Plugin/MigrateSourcePluginManager.php

Finds plugin definitions.

MigrationPluginManager::findDefinitions in core/modules/migrate/src/Plugin/MigrationPluginManager.php

Finds plugin definitions.

SectionStorageManager::findDefinitions in core/modules/layout_builder/src/SectionStorage/SectionStorageManager.php

Finds plugin definitions.