@java.lang.Override
    public Builder clear() {
      super.clear();
      bitField0_ = 0;
      uri_ = "";
      pageNumber_ = 0;
      return this;
    }
<pre>
If an image was produced from a file (e.g. a PDF), this message gives
information about the source of that image.
</pre>

Protobuf type {@code google.cloud.vision.v1p4beta1.ImageAnnotationContext}
java-vision/proto-google-cloud-vision-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/ImageAnnotationContext.java