https://openjdk.java.net/ 
public interface sun.util.locale.provider.ResourceBundleBasedAdapter
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: sun.util.locale.provider.ResourceBundleBasedAdapter
  super_class: java.lang.Object
{
  public abstract sun.util.resources.LocaleData getLocaleData();
    descriptor: ()Lsun/util/resources/LocaleData;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "ResourceBundleBasedAdapter.java"