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 final class io.netty.handler.codec.http2.StreamBufferingEncoder$Http2ChannelClosedException extends io.netty.handler.codec.http2.Http2Exception
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: io.netty.handler.codec.http2.StreamBufferingEncoder$Http2ChannelClosedException
  super_class: io.netty.handler.codec.http2.Http2Exception
{
  private static final long serialVersionUID;
    descriptor: J
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: 4768543442094476971

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // io.netty.handler.codec.http2.StreamBufferingEncoder$Http2ChannelClosedException this
         0: .line 68
            aload 0 /* this */
            getstatic io.netty.handler.codec.http2.Http2Error.REFUSED_STREAM:Lio/netty/handler/codec/http2/Http2Error;
            ldc "Connection closed"
            invokespecial io.netty.handler.codec.http2.Http2Exception.<init>:(Lio/netty/handler/codec/http2/Http2Error;Ljava/lang/String;)V
         1: .line 69
            return
        end local 0 // io.netty.handler.codec.http2.StreamBufferingEncoder$Http2ChannelClosedException this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lio/netty/handler/codec/http2/StreamBufferingEncoder$Http2ChannelClosedException;
}
SourceFile: "StreamBufferingEncoder.java"
NestHost: io.netty.handler.codec.http2.StreamBufferingEncoder
InnerClasses:
  public final Http2ChannelClosedException = io.netty.handler.codec.http2.StreamBufferingEncoder$Http2ChannelClosedException of io.netty.handler.codec.http2.StreamBufferingEncoder