src/java.base/share/classes/sun/util/locale/provider/ResourceBundleBasedAdapter.java

*** 23,37 ****
--- 23,44 ----
   * questions.
   */
  
  package sun.util.locale.provider;
  
+ import java.util.List;
+ import java.util.Locale;
  import sun.util.resources.LocaleData;
  
  /**
   * Accessor for LocaleData
   *
   * @author Naoto Sato
   */
  public interface ResourceBundleBasedAdapter {
      public LocaleData getLocaleData();
+ 
+     /**
+      * candidate locales customization
+      */
+     public List<Locale> getCandidateLocales(String baseName, Locale locale);
  }