Import two CSVs in magento 2 module/extension code

问题

First import products CSV. Then import Advance Pricing CSV. The code is running fine and I get no error. But when I check in the admin dashboard, only products are imported. And customer advance pricing is not imported.

If I import the same Advance Pricing CSV manually through System -> Import -> Entity type (Advance Pricing), it is imported successfully. Why both of these CSVs are not imported simultaneously one after the other.

来源：https://stackoverflow.com/questions/58063215/import-two-csvs-in-magento-2-module-extension-code