public java.util.List<? extends com.google.cloud.vertexai.api.AttributionOrBuilder>
        getAttributionsOrBuilderList() {
      if (attributionsBuilder_ != null) {
        return attributionsBuilder_.getMessageOrBuilderList();
      } else {
        return java.util.Collections.unmodifiableList(attributions_);
      }
    }
<pre>
Output only. Feature attributions grouped by predicted outputs.

For Models that predict only one output, such as regression Models that
predict only one score, there is only one attibution that explains the
predicted output. For Models that predict multiple outputs, such as
multiclass Models that predict multiple classes, each element explains one
specific item.
[Attribution.output_index][google.cloud.aiplatform.v1.Attribution.output_index]
can be used to identify which output this attribution is explaining.

By default, we provide Shapley values for the predicted class. However,
you can configure the explanation request to generate Shapley values for
any other classes too. For example, if a model predicts a probability of
`0.4` for approving a loan application, the model's decision is to reject
the application since `p(reject) = 0.6 &gt; p(approve) = 0.4`, and the default
Shapley values would be computed for rejection decision and not approval,
even though the latter might be the positive class.

If users set
[ExplanationParameters.top_k][google.cloud.aiplatform.v1.ExplanationParameters.top_k],
the attributions are sorted by
[instance_output_value][google.cloud.aiplatform.v1.Attribution.instance_output_value]
in descending order. If
[ExplanationParameters.output_indices][google.cloud.aiplatform.v1.ExplanationParameters.output_indices]
is specified, the attributions are stored by
[Attribution.output_index][google.cloud.aiplatform.v1.Attribution.output_index]
in the same order as they appear in the output_indices.
</pre>

<code>
repeated .google.cloud.vertexai.v1.Attribution attributions = 1 [(.google.api.field_behavior) = OUTPUT_ONLY];
</code>
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/Explanation.java