@type t() :: %ChatKitty.Model.FileSystemMessageResource{
  _links: %{optional(String.t()) => ChatKitty.Model.Link.t()} | nil,
  channelId: integer(),
  createdTime: DateTime.t(),
  file: ChatKitty.Model.FileProperties.t(),
  groupTag: String.t() | nil,
  id: integer(),
  lastEditedTime: DateTime.t() | nil,
  nestedLevel: integer(),
  properties: %{optional(String.t()) => AnyType},
  reactions: [ChatKitty.Model.MessageReactionsSummaryProperties.t()] | nil,
  repliesCount: integer() | nil,
  type: String.t()
}