@type t() :: %Glific.Messages.MessageMedia{
  __meta__: Ecto.Schema.Metadata.t(),
  caption: String.t() | nil,
  gcs_url: String.t() | nil,
  id: non_neg_integer() | nil,
  inserted_at: :utc_datetime | nil,
  organization:
    Glific.Partners.Organization.t() | Ecto.Association.NotLoaded.t() | nil,
  organization_id: non_neg_integer() | nil,
  provider_media_id: String.t() | nil,
  source_url: String.t() | nil,
  thumbnail: String.t() | nil,
  updated_at: :utc_datetime | nil,
  url: String.t() | nil
}