http://netty.io/netty-all/: Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers and clients. (The Netty Project) 
public interface io.netty.util.concurrent.GenericFutureListener<F extends io.netty.util.concurrent.Future<?>> extends java.util.EventListener
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: io.netty.util.concurrent.GenericFutureListener
  super_class: java.lang.Object
{
  public abstract void operationComplete();
    descriptor: (Lio/netty/util/concurrent/Future;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Exceptions:
      throws java.lang.Exception
    Signature: (TF;)V
    MethodParameters:
        Name  Flags
      future  
}
Signature: <F::Lio/netty/util/concurrent/Future<*>;>Ljava/lang/Object;Ljava/util/EventListener;
SourceFile: "GenericFutureListener.java"