public interface java.lang.ref.Cleaner$Cleanable
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: java.lang.ref.Cleaner$Cleanable
  super_class: java.lang.Object
{
  public abstract void clean();
    descriptor: ()V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "Cleaner.java"
NestHost: java.lang.ref.Cleaner
InnerClasses:
  public abstract Cleanable = java.lang.ref.Cleaner$Cleanable of java.lang.ref.Cleaner