ided on the
          containing completion results.

          This value may be provided independently of
          replacementOffset (for example if only one
          differs from the completion result value).
        </p>
      </field>
      <field name="selectionOffset">
        <ref>int</ref>
        <p>
          The offset, relative to the beginning of the completion, of where the
          selection should be placed after insertion.
        </p>
      </field>
      <field name="selectionLength">