<system-data-structure>
   <asset type="file" identifier="action" label="Action" required="true" />
   <asset type="page" identifier="thanks" label="Thank You Redirect" required="true" />
   <text identifier="opening" label="Opening Text" required="true" />
   <group identifier="form_item" label="Form Item" required="true" multiple="true">
      <text type="dropdown" identifier="type" label="Field Type" required="true">
         <dropdown-item value="text" />
         <dropdown-item value="textarea" />
         <dropdown-item value="password" />
         <dropdown-item value="dropdown" />
         <dropdown-item value="checkbox" />
         <dropdown-item value="radio" />
         <dropdown-item value="hidden" />
      </text>
      <text identifier="name" label="Name" required="true" />
      <text identifier="default_value" label="Default Value" />
      <text identifier="value" label="Value" multiple="true" />
      <text type="checkbox" identifier="required" label="Required Field" size="2">
         <checkbox-item value="Yes"/>
      </text>
   </group>
   <text identifier="submit_button_text" label="Submit Button Text" />
</system-data-structure>