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.AsyncMapping<IN, OUT>
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: io.netty.util.AsyncMapping
  super_class: java.lang.Object
{
  public abstract io.netty.util.concurrent.Future<OUT> map(IN, io.netty.util.concurrent.Promise<OUT>);
    descriptor: (Ljava/lang/Object;Lio/netty/util/concurrent/Promise;)Lio/netty/util/concurrent/Future;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Signature: (TIN;Lio/netty/util/concurrent/Promise<TOUT;>;)Lio/netty/util/concurrent/Future<TOUT;>;
    MethodParameters:
         Name  Flags
      input    
      promise  
}
Signature: <IN:Ljava/lang/Object;OUT:Ljava/lang/Object;>Ljava/lang/Object;
SourceFile: "AsyncMapping.java"