private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.vertexai.api.IntegratedGradientsAttribution,
            com.google.cloud.vertexai.api.IntegratedGradientsAttribution.Builder,
            com.google.cloud.vertexai.api.IntegratedGradientsAttributionOrBuilder>
        getIntegratedGradientsAttributionFieldBuilder() {
      if (integratedGradientsAttributionBuilder_ == null) {
        if (!(methodCase_ == 2)) {
          method_ =
              com.google.cloud.vertexai.api.IntegratedGradientsAttribution.getDefaultInstance();
        }
        integratedGradientsAttributionBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.vertexai.api.IntegratedGradientsAttribution,
                com.google.cloud.vertexai.api.IntegratedGradientsAttribution.Builder,
                com.google.cloud.vertexai.api.IntegratedGradientsAttributionOrBuilder>(
                (com.google.cloud.vertexai.api.IntegratedGradientsAttribution) method_,
                getParentForChildren(),
                isClean());
        method_ = null;
      }
      methodCase_ = 2;
      onChanged();
      return integratedGradientsAttributionBuilder_;
    }
<pre>
An attribution method that computes Aumann-Shapley values taking
advantage of the model's fully differentiable structure. Refer to this
paper for more details: https://arxiv.org/abs/1703.01365
</pre>

<code>
.google.cloud.vertexai.v1.IntegratedGradientsAttribution integrated_gradients_attribution = 2;
</code>
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/ExplanationParameters.java