https://openjdk.java.net/ 
public interface java.awt.peer.MenuPeer extends java.awt.peer.MenuItemPeer
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: java.awt.peer.MenuPeer
  super_class: java.lang.Object
{
  public abstract void addSeparator();
    descriptor: ()V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract void addItem(java.awt.MenuItem);
    descriptor: (Ljava/awt/MenuItem;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
      Name  Flags
      item  

  public abstract void delItem(int);
    descriptor: (I)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
       Name  Flags
      index  
}
SourceFile: "MenuPeer.java"