@java.lang.Override
        public int getOverlayTypeValue() {
          return overlayType_;
        }
<pre>
How the original image is displayed in the visualization.
Adjusting the overlay can help increase visual clarity if the original
image makes it difficult to view the visualization. Defaults to NONE.
</pre>

<code>
.google.cloud.vertexai.v1.ExplanationMetadata.InputMetadata.Visualization.OverlayType overlay_type = 6;
</code>

@return The enum numeric value on the wire for overlayType.
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/ExplanationMetadata.java