@GwtIncompatible
  public static Executor newSequentialExecutor(Executor delegate) {
    return new SequentialExecutor(delegate);
  }

  /**
   * Creates an {@link ExecutorService} whose {@code submit} and {@code invokeAll} methods submit
   * {@link ListenableFutureTask} instances to the given delegate executor. Those methods, as well
   * as {@code execute} and {@code invokeAny}, are implemented in terms of calls to {@code

                                    <div class="form-group row">
                                        <div class="offset-sm-2 col-sm-10">
                                            <button type="submit" class="btn btn-primary" id="submit"
                                                    name="search"
                                                    value="<la:message key="labels.crud_button_search" />">

                            </div>
                            <div class="card-footer">
                                <c:if test="${crudMode == 4}">
                                    <button type="submit" class="btn btn-default" name="back"
                                            value="<la:message key="labels.crawling_info_button_back" />">
                                        <em class="fa fa-arrow-circle-left">

                                                                        </button>
                                                                        <button type="submit"
                                                                                class="btn btn-outline-light"
                                                                                name="deleteAllWords"

                                </p>
                            </div>
                            <div class="card-footer">
                                <button type="submit" class="btn btn-success"
                                        name="startCrawling"
                                        value="<la:message key="labels.wizard_button_start_crawling"/>">

                                    </div>
                                </div>
                                <div class="card-footer">
                                    <button type="submit" class="btn btn-default" name="back"
                                            value="<la:message key="labels.design_button_back" />">
                                        <em class="fa fa-arrow-circle-left">

public class ClosingFutureFinishToFutureTest extends AbstractClosingFutureTest {
  public void testFinishToFuture_throwsIfCalledTwice() throws Exception {
    ClosingFuture<Closeable> closingFuture =
        ClosingFuture.submit(
            new ClosingCallable<Closeable>() {
              @Override
              public Closeable call(DeferredCloser closer) throws Exception {
                return closer.eventuallyClose(mockCloseable, executor);

                                    <div class="form-group row">
                                        <div class="offset-sm-2 col-sm-10">
                                            <button type="submit" class="btn btn-primary" id="submit"
                                                    name="search"
                                                    value="<la:message key="labels.crud_button_search" />">

    }

    @Override
    public <T> Future<T> submit(Callable<T> task) {
      throw new UnsupportedOperationException();
    }

    @Override
    public Future<?> submit(Runnable task) {
      throw new UnsupportedOperationException();
    }

    @Override
    public <T> Future<T> submit(Runnable task, T result) {
      throw new UnsupportedOperationException();
    }

Class),g="true"===b.valAttr("optional"),h=b.hasClass(d.errorElementClass);if(h||!f&&!g)return e=!1,!1}}),e}a.formUtils.registerLoadedModule("toggleDisabled");var e=function(a,b){"disabled"===b?a.find('*[type="submit"]').addClass("disabled").attr("disabled","disabled"):a.find('*[type="submit"]').removeClass("disabled").removeAttr("disabled")},f=!1;a.formUtils.$win.bind("validatorsLoaded formValidationSetup",function(b,g,h){var i=h.disabledFormFilter?g.filter(h.disabledFormFilter):g,j=h.showErrorD...