<vmap:Extension extAttribute="extAttribute content" extAttribute2="extAttribute2 content">
  <![CDATA[{"example":{"property1":1234,"property2":"abcd"},"another":"qwerty"}]]>
  <vmap:Test testAttribute="testAttribute content" testAttribute2="testAttribute2 content">
    Test value
  </vmap:Test>
  <vmap:Test2 test2Attribute="test2Attribute content" test2Attribute2="test2Attribute2 content">
    Test2 value
  </vmap:Test2>
</vmap:Extension>