BubbleableMetadataTest::testApply has wrong @covers

Problem/Motivation

This issue #2350551: Views fields that have attached assets are lost when Views output caching is enabled introduced a bug into unit test @cover annotations.

+++ b/core/tests/Drupal/Tests/Core/Render/BubbleableMetadataTest.php
@@ -0,0 +1,117 @@
+/**
+ * @coversDefaultClass \Drupal\Core\Render\BubbleableMetadata
+ * @group Render
+ */
+class BubbleableMetadataTest extends UnitTestCase {
+
+  /**
+   * @covers ::apply
+   * @dataProvider providerTestApply
+   */
+  public function testApply(BubbleableMetadata $metadata, array $render_array, array $expected) {

There's no such method as BubbleableMetadata::apply(), so the @cover annotation is incorrect and I can't make a coverage report.

Proposed resolution

Fix the annotation.

Remaining tasks

User interface changes

API changes