34 files declare their use of DomainInterface in Domain Access 8

DefaultDomain.php in domain/src/Plugin/Action/DefaultDomain.php

DeleteDomain.php in domain/src/Plugin/Action/DeleteDomain.php

DisableDomain.php in domain/src/Plugin/Action/DisableDomain.php

domain.drush.inc in domain/domain.drush.inc

Drush commands for Domain Access.

domain.install in domain/domain.install

Install, update and uninstall functions for the Domain Access module.

domain.module in domain/domain.module

Defines a Domain concept for use with Drupal.

Domain.php in domain/src/Entity/Domain.php

DomainAccessControlHandler.php in domain/src/DomainAccessControlHandler.php

DomainAccessManager.php in domain_access/src/DomainAccessManager.php

DomainAccessManagerInterface.php in domain_access/src/DomainAccessManagerInterface.php

DomainAdminElementTest.php in domain/tests/src/Functional/DomainAdminElementTest.php

DomainAliasController.php in domain_alias/src/Controller/DomainAliasController.php

DomainAliasListBuilder.php in domain_alias/src/DomainAliasListBuilder.php

DomainAliasListBuilderTest.php in domain_alias/tests/src/Functional/DomainAliasListBuilderTest.php

DomainAliasStorage.php in domain_alias/src/DomainAliasStorage.php

DomainAliasStorageInterface.php in domain_alias/src/DomainAliasStorageInterface.php

DomainAliasTestTrait.php in domain_alias/tests/src/Traits/DomainAliasTestTrait.php

DomainCommands.php in domain/src/Commands/DomainCommands.php

DomainConfigOverrider.php in domain_config/src/DomainConfigOverrider.php

DomainConfigOverriderTest.php in domain_config/tests/src/Functional/DomainConfigOverriderTest.php

DomainConfigUIOptionsTest.php in domain_config_ui/tests/src/Functional/DomainConfigUIOptionsTest.php

DomainContentController.php in domain_content/src/Controller/DomainContentController.php

DomainController.php in domain/src/Controller/DomainController.php

DomainListBuilder.php in domain/src/DomainListBuilder.php

DomainListBuilderTest.php in domain/tests/src/Functional/DomainListBuilderTest.php

DomainReferencesTest.php in domain/tests/src/Functional/DomainReferencesTest.php

DomainTestBase.php in domain/tests/src/Functional/DomainTestBase.php

DomainTokenBlock.php in domain/src/Plugin/Block/DomainTokenBlock.php

domain_alias.module in domain_alias/domain_alias.module

Maps multiple host requests to a single domain record.

domain_config_test.module in domain_config/tests/modules/domain_config_test/domain_config_test.module

Hook implementations for this module.

domain_content.module in domain_content/domain_content.module

Hook implementations for this module.

domain_test.module in domain/tests/modules/domain_test/domain_test.module

Domain hook test module.

EnableDomain.php in domain/src/Plugin/Action/EnableDomain.php

SwitchForm.php in domain_config_ui/src/Form/SwitchForm.php