SCHEMA_UNINSTALLED

drupal_get_installed_schema_version in core/includes/schema.inc

Returns the currently installed schema version for a module.

ModuleExtensionList::doList in core/lib/Drupal/Core/Extension/ModuleExtensionList.php

Builds the list of extensions.

ModuleHandlerTest::testDependencyResolution in core/modules/system/tests/src/Kernel/Extension/ModuleHandlerTest.php

Tests dependency resolution.

ModuleHandlerTest::testUninstallContentDependency in core/modules/system/tests/src/Kernel/Extension/ModuleHandlerTest.php

Tests uninstalling a module that has content.

ModuleHandlerTest::testUninstallProfileDependency in core/modules/system/tests/src/Kernel/Extension/ModuleHandlerTest.php

Tests uninstalling a module installed by a profile.

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