Request body to create a comment on a page, block or existing discussion. Provide either `parent` or `discussion_id`, and either `rich_text` or `markdown`.
| Property | Type | Description |
|---|---|---|
| attachments | Files to attach (max 3). | |
| discussion_id | String | ID of an existing discussion thread to reply to. |
| display_name | Comment_Display_Name | Display name for the comment. |
| markdown | String | Content as Markdown (inline formatting only). |
| parent | Parent_Id | The parent page or block. |
| rich_text | Content of the comment. |