From ec806eb3cce0f844ef156519e3cf599a7a17a52f Mon Sep 17 00:00:00 2001
From: vuule <vmilovanovic@nvidia.com>
Date: Wed, 4 May 2022 10:52:39 -0700
Subject: [PATCH] docs; nodiscard

---
 cpp/src/io/parquet/reader_impl.cu | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/cpp/src/io/parquet/reader_impl.cu b/cpp/src/io/parquet/reader_impl.cu
index 4ea4a0465b6..06e87b8e0c4 100644
--- a/cpp/src/io/parquet/reader_impl.cu
+++ b/cpp/src/io/parquet/reader_impl.cu
@@ -335,9 +335,9 @@ class aggregate_reader_metadata {
   }
 
   /**
-   * @brief Merge the keyvalue maps from each per-file metadata object into a single map.
+   * @brief Collect the keyvalue maps from each per-file metadata object into a vector of maps.
    */
-  auto collect_keyval_metadata()
+  [[nodiscard]] auto collect_keyval_metadata()
   {
     std::vector<std::map<std::string, std::string>> kv_maps;
     std::transform(per_file_metadata.cbegin(),