lib/site_prism/element_checker.rb
def elements_to_check
      if _expected_items
        SitePrism.logger.debug('Expected Items has been set.')
        _mapped_items.select { |item_name| _expected_items.include?(item_name) }
      else
        _mapped_items
      end
    end
def elements_to_check
      if _expected_items
        SitePrism.logger.debug('Expected Items has been set.')
        _mapped_items.select { |item_name| _expected_items.include?(item_name) }
      else
        _mapped_items
      end
    end
If the page or section has expected_items set, return expected_items
 that are mapped; otherwise just return the list of all mapped_items