public Builder setTopK(int value) {

      topK_ = value;
      bitField0_ |= 0x00000010;
      onChanged();
      return this;
    }
<pre>
If populated, returns attributions for top K indices of outputs
(defaults to 1). Only applies to Models that predicts more than one outputs
(e,g, multi-class Models). When set to -1, returns explanations for all
outputs.
</pre>

<code>int32 top_k = 4;</code>

@param value The topK to set.
@return This builder for chaining.
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/ExplanationParameters.java