How to use

setLanguages

method

in

org.restlet.representation.Representation

@Override
public void setLanguages(List<Language> languages) {
  getWrappedRepresentation().setLanguages(languages);
}

private Representation entityHeaders( Representation representation, EntityState entityState )
{
  representation.setModificationDate( java.util.Date.from( entityState.lastModified() ) );
  representation.setTag( new Tag( "" + entityState.version() ) );
  representation.setCharacterSet( CharacterSet.UTF_8 );
  representation.setLanguages( Collections.singletonList( Language.ENGLISH ) );
  return representation;
}

    .setEncodings(representation.getEncodings());
resultRepresentation
    .setLanguages(representation.getLanguages());

  @Override
  public Representation toRepresentation(Object object,
      Variant targetVariant, UniformResource resource) throws IOException {
    Representation result = null;

    if (object instanceof Document) {
      result = new DomRepresentation(targetVariant == null ? null
          : targetVariant.getMediaType(), (Document) object);
    }

    if ((result != null) && (targetVariant != null)) {
      // Copy the variant metadata
      result.setCharacterSet(targetVariant.getCharacterSet());
      result.setMediaType(targetVariant.getMediaType());
      result.setEncodings(targetVariant.getEncodings());
      result.setLanguages(targetVariant.getLanguages());
    }

    return result;
  }
}

/**
 * Constructor from a variant.
 * 
 * @param variant
 *            The variant to copy.
 * @param modificationDate
 *            The modification date.
 * @param tag
 *            The tag.
 */
public Representation(Variant variant, Date modificationDate, Tag tag) {
  setCharacterSet(variant.getCharacterSet());
  setEncodings(variant.getEncodings());
  setLocationRef(variant.getLocationRef());
  setLanguages(variant.getLanguages());
  setMediaType(variant.getMediaType());
  setModificationDate(modificationDate);
  setTag(tag);
}