private void ensureLanguageHintsIsMutable() {
      if (!languageHints_.isModifiable()) {
        languageHints_ = new com.google.protobuf.LazyStringArrayList(languageHints_);
      }
      bitField0_ |= 0x00000002;
    }
<pre>
Not used.
</pre>

<code>.google.cloud.vision.v1p4beta1.LatLongRect lat_long_rect = 1;</code>
java-vision/proto-google-cloud-vision-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/ImageContext.java