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.handler.codec.http.HttpClientUpgradeHandler$SourceCodec
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: io.netty.handler.codec.http.HttpClientUpgradeHandler$SourceCodec
  super_class: java.lang.Object
{
  public abstract void prepareUpgradeFrom(io.netty.channel.ChannelHandlerContext);
    descriptor: (Lio/netty/channel/ChannelHandlerContext;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
      Name  Flags
      ctx   

  public abstract void upgradeFrom(io.netty.channel.ChannelHandlerContext);
    descriptor: (Lio/netty/channel/ChannelHandlerContext;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
      Name  Flags
      ctx   
}
SourceFile: "HttpClientUpgradeHandler.java"
NestHost: io.netty.handler.codec.http.HttpClientUpgradeHandler
InnerClasses:
  public abstract SourceCodec = io.netty.handler.codec.http.HttpClientUpgradeHandler$SourceCodec of io.netty.handler.codec.http.HttpClientUpgradeHandler