@type t() :: %PolarExpress.Schemas.OAuth2ClientConfiguration{
  client_name: String.t() | nil,
  client_uri: String.t() | nil,
  default_sub_type: PolarExpress.Schemas.SubType.t() | nil,
  grant_types: [String.t()] | nil,
  logo_uri: String.t() | nil,
  policy_uri: String.t() | nil,
  redirect_uris: [String.t()] | nil,
  response_types: [String.t()] | nil,
  scope: String.t() | nil,
  token_endpoint_auth_method: String.t() | nil,
  tos_uri: String.t() | nil
}