@TestMetadata("analysis/analysis-api/testData/referenceResolve/kDoc/extensions")
    @TestDataPath("$PROJECT_ROOT")
    public class Extensions {
      @Test
      public void testAllFilesPresentInExtensions() {
        KtTestUtil.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("analysis/analysis-api/testData/referenceResolve/kDoc/extensions"), Pattern.compile("^([^.]+)\\.kt$"), null, true);
      }

      NavigableMap<K, V> synchronizedNavigableMap(NavigableMap<K, V> navigableMap) {
    return Synchronized.navigableMap(navigableMap);
  }

  /**
   * {@code AbstractMap} extension that makes it easy to cache customized keySet, values, and
   * entrySet views.
   */
  @GwtCompatible
  abstract static class ViewCachingAbstractMap<