class java.lang.ref.ReferenceQueue$Lock
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: java.lang.ref.ReferenceQueue$Lock
  super_class: java.lang.Object
{
  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // java.lang.ref.ReferenceQueue$Lock this
         0: .line 55
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // java.lang.ref.ReferenceQueue$Lock this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Ljava/lang/ref/ReferenceQueue$Lock;
}
SourceFile: "ReferenceQueue.java"
NestHost: java.lang.ref.ReferenceQueue
InnerClasses:
  private Lock = java.lang.ref.ReferenceQueue$Lock of java.lang.ref.ReferenceQueue