public Builder setSource(com.google.cloud.vision.v1.ImageSource.Builder builderForValue) {
      if (sourceBuilder_ == null) {
        source_ = builderForValue.build();
      } else {
        sourceBuilder_.setMessage(builderForValue.build());
      }
      bitField0_ |= 0x00000002;
      onChanged();
      return this;
    }
<pre>
Google Cloud Storage image location, or publicly-accessible image
URL. If both `content` and `source` are provided for an image, `content`
takes precedence and is used to perform the image annotation request.
</pre>

<code>.google.cloud.vision.v1.ImageSource source = 2;</code>
java-vision/proto-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/Image.java