Avoid sending both last_digits and last_4_digits

Author: ugexe

lib/minfraud/components/credit_card.rb

@@ -21,13 +21,6 @@ class CreditCard < Base
       # @return [String, nil]
       attr_accessor :last_digits
 
-      # The last four digits of the credit card number.
-      #
-      # @deprecated Use {::last_digits} instead.
-      #
-      # @return [String, nil]
-      attr_accessor :last_4_digits
-
       # The name of the issuing bank as provided by the end user.
       #
       # @return [String, nil]
@@ -81,13 +74,21 @@ class CreditCard < Base
       # @return [Boolean, nil]
       attr_accessor :was_3d_secure_successful
 
+      # The last digits of the credit card number.
+      #
+      # @deprecated Use {::last_digits} instead.
+      #
+      # @return [String, nil]
+      def last_4_digits
+        @last_digits
+      end
+
       # @param params [Hash] Hash of parameters. Each key/value should
       #   correspond to one of the available attributes.
       def initialize(params = {})
         @bank_phone_country_code  = params[:bank_phone_country_code]
         @issuer_id_number         = params[:issuer_id_number]
         @last_digits              = params[:last_digits] || params[:last_4_digits]
-        @last_4_digits            = @last_digits
         @bank_name                = params[:bank_name]
         @bank_phone_number        = params[:bank_phone_number]
         @avs_result               = params[:avs_result]