public com.google.cloud.visionai.v1.NormalizedVertex.Builder getNormalizedVerticesBuilder(
        int index) {
      return getNormalizedVerticesFieldBuilder().getBuilder(index);
    }
<pre>
The bounding polygon normalized vertices. Top left corner of the image
will be [0, 0].
</pre>

<code>repeated .google.cloud.visionai.v1.NormalizedVertex normalized_vertices = 1;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/NormalizedPolygon.java