EDIT

  for ($r = 0; ($r < $maxRows || !$maxRows) && count($mediaList) > 0; $r++) {

    $captionParts = array();

    $mediaIndex = 0;

    for ($c = 0; $c < $cols; $c++) {

      $media = array_shift($mediaList);

      if(!$media){

    $out .= '</tr>'; // End of media parts.

    if ($showCaption) {

      if ( (is_array($captionElements) && count($captionElements) > 0) || $caption_link_uri) {

        // Add caption row.

        foreach ($captionParts as $captionPartHtml) {

          $out .= '<td class="caption">' . $captionPartHtml . '</td>';

      $moreHtml = t('open gallery');

    }

    $moreHtml = l($moreHtml, $galleryLinkUri);

  }

  $out .= '</table>';

        ArrayList<List<GalleryImage>> galleryImageRows = new ArrayList<List<GalleryImage>>();

        logger.debug("GalleryImages - total rows " + tableRows.size());

        // loop table rows

        for(int rowId = 0; rowId * 2 < tableRows.size() && tableRows.size() > 0; rowId++ ){

            logger.debug("GalleryImages - number of image cells: " + imageCells.size());

            List<WebElement> captionCells = null;

            if(tableRows.size() > rowId * 2 + 1){

                logger.debug("GalleryImages - number of caption cells: " + captionCells.size());

            }

        wait.until(

                    new AllTrue(

                                new PageTitleValidated(context.prepareTitle("Search results")),

                                )

                    );

        return new TaxonSearchResultPage(driver, context);

     */

    public <T extends PortalPage> T clickLink(BaseElement element, Function<? super WebDriver, Boolean> isTrue, Class<T> pageType, Long duration, TimeUnit waitUnit) {

            throw new RuntimeException("Parameter pageType must be a subclass of PortalPage");

        }

        String targetWindow = null;

        Constructor<T> constructor;

        T pageInstance;

        }

    }

import eu.etaxonomy.dataportal.pages.GenericPortalPage;

import eu.etaxonomy.dataportal.pages.PortalPage;

import eu.etaxonomy.dataportal.pages.TaxonSearchResultPage;

import eu.etaxonomy.dataportal.selenium.VisibilityOfElementLocated;

import junit.framework.Assert;

    private static final UUID UUID_L_COMMUNIS = UUID.fromString("5d65f017-0c23-43e4-888d-9649de50dd45");

    private static GenericPortalPage homePage = null;

    @Before

    public void setUp() throws Exception {

    }

    public void testSearchLCommunis() throws Exception {

        TaxonSearchResultPage searchResultPage = homePage.submitQuery("Lapsana com*");

        GalleryImage firstImage = galleryImageRows.get(0).get(0);

        assertNull("caption should be off", firstImage.getCaptionText());

    }

}