@type t() :: %ExPlain.Tiers.Tier{
  created_at: ExPlain.DateTime.t(),
  created_by: ExPlain.Actor.t() | nil,
  default_thread_priority: integer(),
  external_id: String.t() | nil,
  id: String.t(),
  name: String.t(),
  updated_at: ExPlain.DateTime.t(),
  updated_by: ExPlain.Actor.t() | nil
}