https://openjdk.java.net/ 
public interface sun.swing.text.UndoableEditLockSupport extends javax.swing.undo.UndoableEdit
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: sun.swing.text.UndoableEditLockSupport
  super_class: java.lang.Object
{
  public abstract void lockEdit();
    descriptor: ()V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract void unlockEdit();
    descriptor: ()V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "UndoableEditLockSupport.java"