public Builder addGroundingChunks(
        int index, com.google.cloud.vertexai.api.GroundingChunk.Builder builderForValue) {
      if (groundingChunksBuilder_ == null) {
        ensureGroundingChunksIsMutable();
        groundingChunks_.add(index, builderForValue.build());
        onChanged();
      } else {
        groundingChunksBuilder_.addMessage(index, builderForValue.build());
      }
      return this;
    }
<pre>
List of supporting references retrieved from specified grounding source.
</pre>

<code>repeated .google.cloud.vertexai.v1.GroundingChunk grounding_chunks = 5;</code>
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/GroundingMetadata.java