code: @Then("^the element on index '(\\d+?)' (IS|IS NOT) displayed$")
      public void assertSeleniumIsDisplayed(Integer index, Boolean isDisplayed) {
          assertThat(this.commonspec, commonspec.getPreviousWebElements()).as("There are less found elements than required")
                  .hasAtLeast(index);
          assertThat(this.commonspec, commonspec.getPreviousWebElements().getPreviousWebElements().get(index).isDisplayed()).as(
                  "Unexpected element display property").isEqualTo(isDisplayed);
      }
docs: Verifies that a webelement previously found {@code isDisplayed}
  
  @param index
  @param isDisplayed