@java.lang.Override
  public int getSerializedSize() {
    int size = memoizedSize;
    if (size != -1) return size;

    size = 0;
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(gcsImageUri_)) {
      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(1, gcsImageUri_);
    }
    if (!com.google.protobuf.GeneratedMessageV3.isStringEmpty(imageUri_)) {
      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(2, imageUri_);
    }
    size += getUnknownFields().getSerializedSize();
    memoizedSize = size;
    return size;
  }
<pre>
The URI of the source image. Can be either:

1. A Google Cloud Storage URI of the form
   `gs://bucket_name/object_name`. Object versioning is not supported. See
   [Google Cloud Storage Request
   URIs](https://cloud.google.com/storage/docs/reference-uris) for more
   info.

2. A publicly-accessible image HTTP/HTTPS URL. When fetching images from
   HTTP/HTTPS URLs, Google cannot guarantee that the request will be
   completed. Your request may fail if the specified host denies the
   request (e.g. due to request throttling or DOS prevention), or if Google
   throttles requests to the site for abuse prevention. You should not
   depend on externally-hosted images for production applications.

When both `gcs_image_uri` and `image_uri` are specified, `image_uri` takes
precedence.
</pre>

<code>string image_uri = 2;</code>

@return The bytes for imageUri.
java-vision/proto-google-cloud-vision-v1p2beta1/src/main/java/com/google/cloud/vision/v1p2beta1/ImageSource.java