docs: @Override
      public List<StorageState> decodeContent(InputStream in, Charset charset) throws IOException {
          // 解析报文内容
          byte[] bytes = new byte[(int) getContentLength()];
          int contentSize = in.read(bytes);
          if (contentSize != getContentLength()) {
              throw new IOException("读取到的数据长度与协议长度不符");
          }
          return decode(bytes, charset);
  
      }