@type t() :: %PolarExpress.Resources.Subscriptions{
  amount: term(),
  cancel_at_period_end: term(),
  canceled_at: term(),
  checkout_id: term(),
  created_at: term(),
  currency: term(),
  current_period_end: term(),
  current_period_start: term(),
  custom_field_data: term(),
  customer: term(),
  customer_cancellation_comment: term(),
  customer_cancellation_reason: term(),
  customer_id: term(),
  discount: term(),
  discount_id: term(),
  ended_at: term(),
  ends_at: term(),
  id: term(),
  metadata: term(),
  meters: term(),
  modified_at: term(),
  pending_update: term(),
  prices: term(),
  product: term(),
  product_id: term(),
  recurring_interval: term(),
  recurring_interval_count: term(),
  seats: term(),
  started_at: term(),
  status: term(),
  trial_end: term(),
  trial_start: term()
}