they can be referenced. Edits in the same response
          that do not need to be referenced will not have an id.
        </p>
      </field>
      <field name="description" optional="true">
        <ref>String</ref>
        <p>
          A human readable description of the change made by this edit.
        </p>
        <p>
          This description should be short and suitable to use as a heading
          with changes grouped by it. For example, a change made as part of
          a quick-fix may use th