@java.lang.Override
    public float getPanAngle() {
      return panAngle_;
    }
<pre>
Yaw angle, which indicates the leftward/rightward angle that the face is
pointing relative to the vertical plane perpendicular to the image. Range
[-180,180].
</pre>

<code>float pan_angle = 5;</code>

@return The panAngle.
java-vision/proto-google-cloud-vision-v1p3beta1/src/main/java/com/google/cloud/vision/v1p3beta1/FaceAnnotation.java