private void registerGroovydocHighlighter() {
    // Register GroovyDoc Highlighter
    SyntaxHighlighter groovyDocHighlighter = new GroovyDocSyntaxHighlighter();
    final LayerDescriptor groovyDocLayer = new LayerDescriptor(groovyDocHighlighter, "\n", GroovySyntaxHighlighter.DOC_COMMENT_CONTENT);
    registerLayer(GroovyDocElementTypes.GROOVY_DOC_COMMENT, groovyDocLayer);
  }
private void registerGroovydocHighlighter()