https://openjdk.java.net/ 
public interface java.awt.peer.CheckboxMenuItemPeer 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.CheckboxMenuItemPeer
  super_class: java.lang.Object
{
  public abstract void setState(boolean);
    descriptor: (Z)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
       Name  Flags
      state  
}
SourceFile: "CheckboxMenuItemPeer.java"