I am trying to make a rake task but after completion my code i realized i need some refactorization. How could I do refactorization of the following code?def self.transaction_type(row)    if row['SENDER_BLZ'] == '00000000' and row['RECEIVER_BLZ'] == '00000000'      return 'AccountTransfer'    elsif row['SENDER_BLZ'] == '00000000' and row['UMSATZ_KEY'] == '10'      return 'BankTransfer'    elsif row['RECEIVER_BLZ'] == '70022200' and ['16'].include?row['UMSATZ_KEY']      return 'Lastschrift'    else      return false    end  endand second method is def self.import_file_row_with_error_handling(row, validation_only, errors, dtaus)  error_text = nil  self.import_retry_count = 0  5.times do    self.import_retry_count += 1    error_text = nil    begin      import_file_row(row, validation_only, errors, dtaus)      break    rescue => e      error_text = #{row['ACTIVITY_ID']}: #{e.to_s}      break    end  end  errors << error_text if error_text  [errors, dtaus]endJust need bit guid. thanks
rails method for transaction type
ruby;ruby on rails