Lizcov Substitution Coding challenge

lizcov.rb

    # Lizcov

class Payable
  def pay(amount:, credit_card_details:)
    payment_processor.charge!(amount: amount, credit_card_details: credit_card_details)
  end
end
class Bill < Payable
  def charge_credit_card(amount:, credit_card_details:)
    pay(amount:, credit_card_details:)
  end

  def payment_processor
    CreditCardPaymentProcessor
  end
end
class Loan < Payable
  def authorize_loan
    # some Loan Authorization Logic
  end

  def payment_processor
    LoanPaymentProcessor
  end
end