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 abstract class io.netty.handler.codec.socksx.v4.AbstractSocks4Message extends io.netty.handler.codec.socksx.AbstractSocksMessage implements io.netty.handler.codec.socksx.v4.Socks4Message
  minor version: 0
  major version: 59
  flags: flags: (0x0421) ACC_PUBLIC, ACC_SUPER, ACC_ABSTRACT
  this_class: io.netty.handler.codec.socksx.v4.AbstractSocks4Message
  super_class: io.netty.handler.codec.socksx.AbstractSocksMessage
{
  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.netty.handler.codec.socksx.v4.AbstractSocks4Message this
         0: .line 25
            aload 0 /* this */
            invokespecial io.netty.handler.codec.socksx.AbstractSocksMessage.<init>:()V
            return
        end local 0 // io.netty.handler.codec.socksx.v4.AbstractSocks4Message this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/handler/codec/socksx/v4/AbstractSocks4Message;

  public final io.netty.handler.codec.socksx.SocksVersion version();
    descriptor: ()Lio/netty/handler/codec/socksx/SocksVersion;
    flags: (0x0011) ACC_PUBLIC, ACC_FINAL
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.netty.handler.codec.socksx.v4.AbstractSocks4Message this
         0: .line 28
            getstatic io.netty.handler.codec.socksx.SocksVersion.SOCKS4a:Lio/netty/handler/codec/socksx/SocksVersion;
            areturn
        end local 0 // io.netty.handler.codec.socksx.v4.AbstractSocks4Message this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/handler/codec/socksx/v4/AbstractSocks4Message;
}
SourceFile: "AbstractSocks4Message.java"