@type t() :: %Stripe.Params.Billing.MeterCreateParams{
  customer_mapping:
    Stripe.Params.Billing.MeterCreateParams.CustomerMapping.t() | nil,
  default_aggregation:
    Stripe.Params.Billing.MeterCreateParams.DefaultAggregation.t(),
  display_name: String.t(),
  event_name: String.t(),
  event_time_window: String.t() | nil,
  expand: [String.t()] | nil,
  value_settings:
    Stripe.Params.Billing.MeterCreateParams.ValueSettings.t() | nil
}