@type t() :: %Spatio.Model.Draft{
  attachments: [Spatio.Model.AttachmentMeta.t()] | nil,
  bcc: [String.t()] | nil,
  body: String.t() | nil,
  cc: [String.t()] | nil,
  createdAt: DateTime.t(),
  html: boolean(),
  id: String.t(),
  messageId: String.t(),
  subject: String.t() | nil,
  threadId: String.t() | nil,
  to: [String.t()] | nil,
  updatedAt: DateTime.t()
}