public interface  io.netty.handler.codec.http.websocketx.extensions.WebSocketClientExtensionHandshaker extends java.lang.Object
{
public abstract io.netty.handler.codec.http.websocketx.extensions.WebSocketExtensionData newRequestData();
public abstract io.netty.handler.codec.http.websocketx.extensions.WebSocketClientExtension handshakeExtension(io.netty.handler.codec.http.websocketx.extensions.WebSocketExtensionData);
}