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.ByteToMessageDecoder$Cumulator
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: io.netty.handler.codec.ByteToMessageDecoder$Cumulator
  super_class: java.lang.Object
{
  public abstract io.netty.buffer.ByteBuf cumulate(io.netty.buffer.ByteBufAllocator, io.netty.buffer.ByteBuf, io.netty.buffer.ByteBuf);
    descriptor: (Lio/netty/buffer/ByteBufAllocator;Lio/netty/buffer/ByteBuf;Lio/netty/buffer/ByteBuf;)Lio/netty/buffer/ByteBuf;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
            Name  Flags
      alloc       
      cumulation  
      in          
}
SourceFile: "ByteToMessageDecoder.java"
NestHost: io.netty.handler.codec.ByteToMessageDecoder
InnerClasses:
  public abstract Cumulator = io.netty.handler.codec.ByteToMessageDecoder$Cumulator of io.netty.handler.codec.ByteToMessageDecoder