ctive="{{routeActive}}"
        route="{{route}}"
        pattern="/:sourceLanguage/:targetLanguage/:modelId"
        data="{{routeData}}"
        tail="{{subRoute}}">
    </app-route>
    <iron-ajax
      id="ajax"
      auto
      handle-as="json"
      url="[[url]]"
      last-response="{{modelConfigurations}}"></iron-ajax>

    <paper-card>
      <div class="layout vertical">
        <language-selector
            id="sourceSelector"
            label="Source Language"
            languages="[[sourceLan