# File lib/selenium/webdriver/remote/bridge.rb, line 557
        def find_element_by(how, what, parent = nil)
          if parent
            id = execute :findChildElement, {:id => parent}, {:using => how, :value => what}
          else
            id = execute :findElement, {}, {:using => how, :value => what}
          end

          Element.new self, element_id_from(id)
        end