   `additionalProperties: true` is pretty much the default for Matrix (it means: "you're allowed to include random
      unspecced properties in your object"), so nothing to do here.

      `additionalProperties: false` means "you're not allowed to include any unspecced properties in your object". We
      may want to consider how to display that; for now we just ignore it.

      TODO: support `patternProperties` here.
    */}}
    {{ if reflect.IsMap .additionalProperties }}

 <tr>
  <td>&lt;Other propert