type footer = { text: string; icon_url: string option; proxy_icon_url: string option; } type image = { url: string option; proxy_url: string option; height: int option; width: int option; } type video = { url: string option; height: int option; width: int option; } type provider = { name: string option; url: string option; } type field = { name: string; value: string; inline: bool option; } type t = { title: string option; kind: string option; description: string option; url: string option; timestamp: string option; colour: int option; footer: footer option; image: image option; thumbnail: image option; video: video option; provider: provider option; fields: (field list) option; }