14 files declare their use of AlterableInterface

block_content.module in core/modules/block_content/block_content.module
Allows the creation of content blocks through the user interface.
database_test.module in core/modules/system/tests/modules/database_test/database_test.module
Database test module.
DefaultSelection.php in core/lib/Drupal/Core/Entity/Plugin/EntityReferenceSelection/DefaultSelection.php
entity_test.module in core/modules/system/tests/modules/entity_test/entity_test.module
Test module for the entity API providing several entity types for testing.
GroupwiseMax.php in core/modules/views/src/Plugin/views/relationship/GroupwiseMax.php
node.module in core/modules/node/node.module
The core module that allows content to be submitted to the site.
QueryInterface.php in core/lib/Drupal/Core/Entity/Query/QueryInterface.php
search_date_query_alter.module in core/modules/search/tests/modules/search_date_query_alter/search_date_query_alter.module
Adds date conditions to node searches.
search_query_alter.module in core/modules/search/tests/modules/search_query_alter/search_query_alter.module
Test module that alters search queries.
system.module in core/modules/system/system.module
Configuration system that lets administrators modify the workings of the site.
taxonomy_test.module in core/modules/taxonomy/tests/modules/taxonomy_test/taxonomy_test.module
Provides test hook implementations for taxonomy tests.
unique_field_constraint_test.module in core/modules/system/tests/modules/unique_field_constraint_test/unique_field_constraint_test.module
Contains unique_field_constraint_test.module.
views.module in core/modules/views/views.module
Primarily Drupal hooks and global API functions to manipulate views.
views_test_query_access.module in core/modules/views/tests/modules/views_test_query_access/views_test_query_access.module
Module to test entity query access in Views.

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