https://openjdk.java.net/ 
public interface javax.management.NotificationListener extends java.util.EventListener
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: javax.management.NotificationListener
  super_class: java.lang.Object
{
  public abstract void handleNotification(javax.management.Notification, java.lang.Object);
    descriptor: (Ljavax/management/Notification;Ljava/lang/Object;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
              Name  Flags
      notification  
      handback      
}
SourceFile: "NotificationListener.java"