private com.google.protobuf.RepeatedFieldBuilderV3<
            com.google.cloud.vertexai.api.GroundingChunk,
            com.google.cloud.vertexai.api.GroundingChunk.Builder,
            com.google.cloud.vertexai.api.GroundingChunkOrBuilder>
        getGroundingChunksFieldBuilder() {
      if (groundingChunksBuilder_ == null) {
        groundingChunksBuilder_ =
            new com.google.protobuf.RepeatedFieldBuilderV3<
                com.google.cloud.vertexai.api.GroundingChunk,
                com.google.cloud.vertexai.api.GroundingChunk.Builder,
                com.google.cloud.vertexai.api.GroundingChunkOrBuilder>(
                groundingChunks_,
                ((bitField0_ & 0x00000004) != 0),
                getParentForChildren(),
                isClean());
        groundingChunks_ = null;
      }
      return groundingChunksBuilder_;
    }
<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