9 string references to library.discovery in Drupal 9

AttachedAssetsTest::testDynamicLibrary in core/tests/Drupal/KernelTests/Core/Asset/AttachedAssetsTest.php

Dynamically defines an asset library and alters it.

AttachedAssetsTest::testLibraryAlter in core/tests/Drupal/KernelTests/Core/Asset/AttachedAssetsTest.php

Adds a JavaScript library to the page and alters it.

AttachedAssetsTest::testLibraryNameConflicts in core/tests/Drupal/KernelTests/Core/Asset/AttachedAssetsTest.php

Tests that multiple modules can implement libraries with the same name.

DeprecatedJqueryUiAssetsTest::testDeprecatedJqueryUi in core/tests/Drupal/KernelTests/Core/Asset/DeprecatedJqueryUiAssetsTest.php

Confirm deprecation status and contents of jQuery UI libraries.

JqueryUiLibraryAssetsTest::setUp in core/tests/Drupal/FunctionalTests/Libraries/JqueryUiLibraryAssetsTest.php

LibraryDiscoveryIntegrationTest::setUp in core/tests/Drupal/KernelTests/Core/Asset/LibraryDiscoveryIntegrationTest.php

ResolvedLibraryDefinitionsFilesMatchTest::setUp in core/tests/Drupal/KernelTests/Core/Asset/ResolvedLibraryDefinitionsFilesMatchTest.php

Stable9LibraryOverrideTest::setUp in core/tests/Drupal/KernelTests/Core/Theme/Stable9LibraryOverrideTest.php

StableLibraryOverrideTest::setUp in core/tests/Drupal/KernelTests/Core/Theme/StableLibraryOverrideTest.php