@type t() :: %Envoy.Admin.V2alpha.UpdateFailureState{
__unknown_fields__: [
{field_number :: integer(), Protobuf.Wire.Types.wire_type(),
value :: term()}
],
details: String.t(),
failed_configuration: Google.Protobuf.Any.t() | nil,
last_update_attempt: Google.Protobuf.Timestamp.t() | nil
}