@type t() :: %Ory.Model.PlanDetails{
  base_fee_monthly: integer(),
  base_fee_yearly: integer(),
  custom: boolean(),
  description: String.t(),
  development_features: %{optional(String.t()) => Ory.Model.GenericUsage.t()},
  features: %{optional(String.t()) => Ory.Model.GenericUsage.t()},
  latest: boolean() | nil,
  name: String.t(),
  production_features: %{optional(String.t()) => Ory.Model.GenericUsage.t()},
  staging_features: %{optional(String.t()) => Ory.Model.GenericUsage.t()},
  version: integer(),
  yearly_only: boolean()
}