@type t() :: %MBTA.Model.TripResourceRelationships{
  occupancy: MBTA.Model.TripResourceRelationshipsOccupancy.t() | nil,
  route: MBTA.Model.ScheduleResourceRelationshipsRoute.t() | nil,
  route_pattern: MBTA.Model.TripResourceRelationshipsRoutePattern.t() | nil,
  service: MBTA.Model.TripResourceRelationshipsService.t() | nil,
  shape: MBTA.Model.TripResourceRelationshipsShape.t() | nil
}