@type t() :: %PolarExpress.Schemas.CustomerBenefitGrantCustom{
  benefit: term(),
  benefit_id: term(),
  created_at: term(),
  customer: term(),
  customer_id: term(),
  error: term(),
  granted_at: term(),
  id: term(),
  is_granted: term(),
  is_revoked: term(),
  member_id: term(),
  modified_at: term(),
  order_id: term(),
  properties: term(),
  revoked_at: term(),
  subscription_id: term()
}