@type t() :: %Envoy.Config.Route.V3.RetryPolicy.RetryBackOff{
__unknown_fields__: [
{field_number :: integer(), Protobuf.Wire.Types.wire_type(),
value :: term()}
],
base_interval: Google.Protobuf.Duration.t() | nil,
max_interval: Google.Protobuf.Duration.t() | nil
}