@type t() :: %NervesHubLink.Message.FirmwareMetadata{
  architecture: String.t(),
  author: String.t() | nil,
  description: String.t() | nil,
  fwup_version: Version.build() | nil,
  misc: String.t() | nil,
  platform: String.t(),
  product: String.t(),
  uuid: binary(),
  vcs_identifier: String.t() | nil,
  version: Version.build()
}