Contents:
PaymentProvider
StripeProvider
get_provider()
PricingStrategy
SubscriptionPricing
UsageBasedPricing
TieredPricing
PerUserPricing
FreemiumPricing
DynamicPricing
HybridPricing
PaymentService
get_payment_service()
PaymentError
ProviderError
ConfigurationError
ValidationError
ResourceNotFoundError
AuthenticationError
WebhookError
PaymentRequiresActionError
generate_random_string()
generate_idempotency_key()
format_amount()
parse_amount()
sanitize_metadata()
calculate_subscription_period_end()