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# Runtime instrumentation proves
# these branches are never used
def process_payment(gateway: str, amount: float):
    if gateway == "CRYPTO":
        return handle_crypto(amount)
    elif gateway == "PAYPAL":
        return handle_paypal(amount)
    elif gateway == "STRIPE":
        # We only use Stripe in production
        client = StripeClient(api_key)
        return client.charge(amount)
    elif gateway == "APPLE_PAY":
        return handle_apple_pay(amount)
    elif gateway == "GOOGLE_PAY":
        return handle_google_pay(amount)
    else:
        raise Exception("Unknown gateway")