public Builder addNormalizedVertices(
        com.google.cloud.visionai.v1.NormalizedVertex.Builder builderForValue) {
      if (normalizedVerticesBuilder_ == null) {
        ensureNormalizedVerticesIsMutable();
        normalizedVertices_.add(builderForValue.build());
        onChanged();
      } else {
        normalizedVerticesBuilder_.addMessage(builderForValue.build());
      }
      return this;
    }
<pre>
A sequence of vertices connected by straight lines.
</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/NormalizedPolyline.java