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) 
final class io.netty.channel.SucceededChannelFuture extends io.netty.channel.CompleteChannelFuture
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: io.netty.channel.SucceededChannelFuture
  super_class: io.netty.channel.CompleteChannelFuture
{
  void <init>(io.netty.channel.Channel, io.netty.util.concurrent.EventExecutor);
    descriptor: (Lio/netty/channel/Channel;Lio/netty/util/concurrent/EventExecutor;)V
    flags: (0x0000) 
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // io.netty.channel.SucceededChannelFuture this
        start local 1 // io.netty.channel.Channel channel
        start local 2 // io.netty.util.concurrent.EventExecutor executor
         0: .line 33
            aload 0 /* this */
            aload 1 /* channel */
            aload 2 /* executor */
            invokespecial io.netty.channel.CompleteChannelFuture.<init>:(Lio/netty/channel/Channel;Lio/netty/util/concurrent/EventExecutor;)V
         1: .line 34
            return
        end local 2 // io.netty.util.concurrent.EventExecutor executor
        end local 1 // io.netty.channel.Channel channel
        end local 0 // io.netty.channel.SucceededChannelFuture this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    2     0      this  Lio/netty/channel/SucceededChannelFuture;
            0    2     1   channel  Lio/netty/channel/Channel;
            0    2     2  executor  Lio/netty/util/concurrent/EventExecutor;
    MethodParameters:
          Name  Flags
      channel   
      executor  

  public java.lang.Throwable cause();
    descriptor: ()Ljava/lang/Throwable;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.netty.channel.SucceededChannelFuture this
         0: .line 38
            aconst_null
            areturn
        end local 0 // io.netty.channel.SucceededChannelFuture this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/channel/SucceededChannelFuture;

  public boolean isSuccess();
    descriptor: ()Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.netty.channel.SucceededChannelFuture this
         0: .line 43
            iconst_1
            ireturn
        end local 0 // io.netty.channel.SucceededChannelFuture this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/channel/SucceededChannelFuture;
}
SourceFile: "SucceededChannelFuture.java"