public Builder setLanguageHints(int index, java.lang.String value) {
      if (value == null) {
        throw new NullPointerException();
      }
      ensureLanguageHintsIsMutable();
      languageHints_.set(index, value);
      bitField0_ |= 0x00000001;
      onChanged();
      return this;
    }
<pre>
Language hint can be specified if the language to be detected is known a
priori. It can increase the accuracy of the detection. Language hint must
be language code in BCP-47 format.

Automatic language detection is performed if no hint is provided.
</pre>

<code>repeated string language_hints = 1;</code>

@param index The index to set the value at.
@param value The languageHints to set.
@return This builder for chaining.
java-video-intelligence/proto-google-cloud-video-intelligence-v1p2beta1/src/main/java/com/google/cloud/videointelligence/v1p2beta1/TextDetectionConfig.java