docs: public static List<Map.Entry<Integer, byte[]>> parseTemplatesShallow(ByteBuf bb) {
          final ImmutableList.Builder<Map.Entry<Integer, byte[]>> templates = ImmutableList.builder();
          int len = bb.readUnsignedShort();
  
          int p = 4; // flow set id and length field itself
          while (p < len) {
              final int start = bb.readerIndex();
              final int templateId = bb.readUnsignedShort();
              final int fieldCount = bb.readUnsignedShort();
              final ImmutableList.Builder<NetFlowV9FieldDef> fieldDefs = ImmutableList.builder();
              for (int i = 0; i < fieldCount; i++) {
                  int fieldType = bb.readUnsignedShort();
                  int fieldLength = bb.readUnsignedShort();
              }
              final byte[] bytes = ByteBufUtil.getBytes(bb, start, bb.readerIndex() - start);
              final Map.Entry<Integer, byte[]> template = Maps.immutableEntry(templateId, bytes);
              templates.add(template);
  
              p += 4 + fieldCount * 4;
          }
  
          return templates.build();
      }