@type t() :: %Ory.Model.UpdateRegistrationFlowBody{
  csrf_token: String.t() | nil,
  method: String.t(),
  password: String.t(),
  provider: String.t(),
  traits: map(),
  transient_payload: map() | nil,
  upstream_parameters: map() | nil,
  webauthn_register: String.t() | nil,
  webauthn_register_displayname: String.t() | nil
}