14 files declare their use of PurgersServiceInterface in Purge 8.3

CapacityDiagnosticCheck.php in src/Plugin/Purge/DiagnosticCheck/CapacityDiagnosticCheck.php

DashboardController.php in modules/purge_ui/src/Controller/DashboardController.php

InvalidateCommand.php in modules/purge_drush/src/Commands/InvalidateCommand.php

InvalidationsService.php in src/Plugin/Purge/Invalidation/InvalidationsService.php

PurgeBlockForm.php in modules/purge_ui/src/Form/PurgeBlockForm.php

PurgerAddForm.php in modules/purge_ui/src/Form/PurgerAddForm.php

PurgerCommands.php in modules/purge_drush/src/Commands/PurgerCommands.php

PurgerDeleteForm.php in modules/purge_ui/src/Form/PurgerDeleteForm.php

PurgerFormController.php in modules/purge_ui/src/Controller/PurgerFormController.php

PurgerMoveForm.php in modules/purge_ui/src/Form/PurgerMoveForm.php

PurgersAvailableDiagnosticCheck.php in src/Plugin/Purge/DiagnosticCheck/PurgersAvailableDiagnosticCheck.php

QueueCommands.php in modules/purge_drush/src/Commands/QueueCommands.php

QueueService.php in src/Plugin/Purge/Queue/QueueService.php

TypesCommand.php in modules/purge_drush/src/Commands/TypesCommand.php