@java.lang.Override
  public float getZ() {
    return z_;
  }
<pre>
Z coordinate (or depth).
</pre>

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

@return The z.
java-vision/proto-google-cloud-vision-v1p1beta1/src/main/java/com/google/cloud/vision/v1p1beta1/Position.java