public static Builder newBuilder(com.google.cloud.vision.v1p4beta1.Position prototype) {
    return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
  }
<pre>
Z coordinate (or depth).
</pre>

<code>float z = 3;</code>

@return The z.
java-vision/proto-google-cloud-vision-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/Position.java