t() :: %Cloudevents.Format.V_0_1.Event{
  cloudEventsVersion: String.t(),
  contentType: String.t() | nil,
  data: any() | nil,
  eventID: String.t(),
  eventTime: String.t() | nil,
  eventType: String.t(),
  extensions: %{optional(String.t()) => any()} | nil,
  schemaURL: String.t() | nil,
  source: String.t()
}