public Builder clearGroundingChunkIndices() {
      groundingChunkIndices_ = emptyIntList();
      bitField0_ = (bitField0_ & ~0x00000002);
      onChanged();
      return this;
    }
<pre>
A list of indices (into 'grounding_chunk') specifying the
citations associated with the claim. For instance [1,3,4] means
that grounding_chunk[1], grounding_chunk[3],
grounding_chunk[4] are the retrieved content attributed to the claim.
</pre>

<code>repeated int32 grounding_chunk_indices = 2;</code>

@return This builder for chaining.
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/GroundingSupport.java