function retextDutch() {
  const self = this

  self.parser = parser

  /**
   * @param {string} value
   *   Document.
   * @returns {Root}
   *   Tree.
   */
  function parser(value) {
    const parser = new ParseDutch()
    add(parser.tokenizeParagraphPlugins, self.data('nlcstParagraphExtensions'))
    add(parser.tokenizeRootPlugins, self.data('nlcstRootExtensions'))
    add(parser.tokenizeSentencePlugins, self.data('nlcstSentenceExtensions'))
    return parser.parse(value)
  }
}
Add support for parsing Dutch natural language.

@this {Processor<Root>}
  Processor.
@returns {undefined}
  Nothing.