public static com.google.cloud.vision.v1p2beta1.ImageAnnotationContext getDefaultInstance() {
    return DEFAULT_INSTANCE;
  }
<pre>
If the file was a PDF or TIFF, this field gives the page number within
the file used to produce the image.
</pre>

<code>int32 page_number = 2;</code>

@return This builder for chaining.
java-vision/proto-google-cloud-vision-v1p2beta1/src/main/java/com/google/cloud/vision/v1p2beta1/ImageAnnotationContext.java