docs: public static Integer parseRecordShallow(ByteBuf bb) {
          final int start = bb.readerIndex();
          int usedTemplateId = bb.readUnsignedShort();
          int length = bb.readUnsignedShort();
          int end = bb.readerIndex() - 4 + length;
          bb.readerIndex(end);
          return usedTemplateId;
      }