@java.lang.Override
  public int getTopK() {
    return topK_;
  }
<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>

@return The topK.
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/ExplanationParameters.java