re id="TrivialPost">
    <template>
      <iron-ajax method="POST"
                 url="/responds_to_post_with_json"></iron-ajax>
    </template>
  </test-fixture>
  <test-fixture id="DebouncedGet">
    <template>
      <iron-ajax auto
                 url="/responds_to_debounced_get_with_json"
                 debounce-duration="150"></iron-ajax>
    </template>
  </test-fixture>
  <test-fixture id='BlankUrl'>
    <template>
      <iron-ajax auto handle-as='text'></iron-ajax>
    </template>
  </test-fixt