LIST_CASE(tensor, TF_ATTR_FUNC);
#undef LIST_CASE
      // All lists empty, determine the type from the OpDef.
      if (metadata.list_size == 0) {
        for (int i = 0; i < oper->node.op_def().attr_size(); ++i) {
          const auto& a = oper->node.op_def().attr(i);
          if (a.name() != attr_name) continue;
          const string& typestr = a.type();
          if (typestr == "list(string)") {

			for len(fieldBuf) >= 4 { // need at least tag and size
				attrTag := fieldBuf.uint16()
				attrSize := int(fieldBuf.uint16())
				if len(fieldBuf) < attrSize {
					continue parseExtras
				}
				attrBuf := fieldBuf.sub(attrSize)
				if attrTag != 1 || attrSize != 24 {
					continue // Ignore irrelevant attributes
				}

				const ticksPerSecond = 1e7    // Windows timestamp resolution