Framework
The primary purpose of the Pacemaker Community Edition (CE), if you will not use it indirectly with the Pacemaker Community Edition (CE) Console Tool, is to support you to build your own Magento 2 import service.
Therefore, we chose a component-based architecture.
Suppose you want to implement your custom component to import another Magento 2 entity, e.g. customers, you can and should follow these guidelines.