public interface  io.netty.handler.codec.http.HttpServerUpgradeHandler$UpgradeCodec extends java.lang.Object
{
public abstract java.util.Collection requiredUpgradeHeaders();
public abstract boolean prepareUpgradeResponse(io.netty.channel.ChannelHandlerContext, io.netty.handler.codec.http.FullHttpRequest, io.netty.handler.codec.http.HttpHeaders);
public abstract void upgradeTo(io.netty.channel.ChannelHandlerContext, io.netty.handler.codec.http.FullHttpRequest);
}