uint64_t field_checksum = 0;
  // Find chunked_fields that match the field_tags.
  for (const ChunkedField& chunked_field : chunked_message.chunked_fields()) {
    const RepeatedPtrField<FieldIndex> chunked_field_tags =
        chunked_field.field_tag();
    const ChunkedMessage& chunked_message = chunked_field.message();
    // Number of sequential field_tag matches.

}

absl::StatusOr<RepeatedPtrField<::tensorflow::proto_splitter::FieldIndex>>
ExtractFieldTags(absl::string_view chunked_field_text_proto) {
  ChunkedField chunked_field;
  TF_RETURN_IF_ERROR(ParseTextProto(chunked_field_text_proto, &chunked_field));
  return chunked_field.field_tag();
}

TEST(FingerprintingTest, TestFieldTagMatchesInitialSubsequence) {
  TF_ASSERT_OK_AND_ASSIGN(RepeatedPtrField<FieldIndex> field_tags,

    const RepeatedPtrField<::tensorflow::proto_splitter::FieldIndex>& a,
    const RepeatedPtrField<::tensorflow::proto_splitter::FieldIndex>& b);

// Pull out the relevant data within `chunked_message`. A `chunked_field` is
// relevant if its `field_tags` are an initial subsequence any of the
// `target_fields` in the provided `target_fields_list`.
absl::StatusOr<::tensorflow::proto_splitter::ChunkedMessage>
PruneChunkedMessage(