https://openjdk.java.net/ 
public interface javax.swing.event.UndoableEditListener extends java.util.EventListener
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: javax.swing.event.UndoableEditListener
  super_class: java.lang.Object
{
  public abstract void undoableEditHappened(javax.swing.event.UndoableEditEvent);
    descriptor: (Ljavax/swing/event/UndoableEditEvent;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
      Name  Flags
      e     
}
SourceFile: "UndoableEditListener.java"