code: @Deprecated
      @Override
      public WebSocketFrame readChunk(ChannelHandlerContext ctx) throws Exception {
          return readChunk(ctx.alloc());
      }
docs: @deprecated Use {@link #readChunk(ByteBufAllocator)}.
  
  Fetches a chunked data from the stream. Once this method returns the last chunk
  and thus the stream has reached at its end, any subsequent {@link #isEndOfInput()}
  call must return {@code true}.
  
  @param ctx {@link ChannelHandlerContext} context of channelHandler
  @return {@link WebSocketFrame} contain chunk of data