public void setLanguageCode(String languageCode) {
        this.languageCode = languageCode;
    }
Specify the language of this captions output track. For most captions output formats, the encoder puts this
language information in the output captions metadata. If your output captions format is DVB-Sub or Burn in, the
encoder uses this language information to choose the font language for rendering the captions text.

@param languageCode
       Specify the language of this captions output track. For most captions output formats, the encoder puts
       this language information in the output captions metadata. If your output captions format is DVB-Sub or
       Burn in, the encoder uses this language information to choose the font language for rendering the captions
       text.
@see LanguageCode
aws-java-sdk-mediaconvert/src/main/java/com/amazonaws/services/mediaconvert/model/CaptionDescriptionPreset.java