src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/toolkit/BaseConfiguration.java

*** 1221,1231 ****
  
      /*
       * Splits the elements in a collection to its individual
       * collection.
       */
!     @SuppressWarnings("removal")
      static private class Splitter {
  
          final Set<ModuleElement> mset = new LinkedHashSet<>();
          final Set<PackageElement> pset = new LinkedHashSet<>();
          final Set<TypeElement> tset = new LinkedHashSet<>();
--- 1221,1231 ----
  
      /*
       * Splits the elements in a collection to its individual
       * collection.
       */
!     @SuppressWarnings("preview")
      static private class Splitter {
  
          final Set<ModuleElement> mset = new LinkedHashSet<>();
          final Set<PackageElement> pset = new LinkedHashSet<>();
          final Set<TypeElement> tset = new LinkedHashSet<>();