, "LargestContentfulPaint is not implemented");
    const helper = new SoftNavigationTestHelper(t);
    const lcpEntries = await helper.getBufferedPerformanceEntriesWithTimeout(
      /*type=*/ "largest-contentful-paint",
      /*minNumEntries=*/ 1,
    );
    assert_equals(lcpEntries.length, 1);
    assert_equals(lcpEntries[0].id, "click-target", "The first entry should be the button");

    const promises = Promise.all([
      SoftNavigationTestHelper.getPerformanceEntries(
        /*type=*/ "soft-navigat