public static com.google.cloud.vertexai.api.ExplanationMetadata.InputMetadata.Visualization
          parseFrom(byte[] data) throws com.google.protobuf.InvalidProtocolBufferException {
        return PARSER.parseFrom(data);
      }
<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 overlayType.
java-vertexai/proto-google-cloud-vertexai-v1/src/main/java/com/google/cloud/vertexai/api/ExplanationMetadata.java