{
  {%- for prop in props %}
  {%- if prop.comment %}{{prop.comment}}{% endif -%}
  {% if prop.key == '[key: string]' -%}
  [key: string]: {{prop.value}};
  {%- else -%}
  {{ prop.key | json }}{% unless prop.required %}?{% endunless %}: {{prop.value}};
  {%- endif %}
  {%- endfor %}
}