For developers’ convenience, we have created several extension examples.
They might help you understand how to develop certain functionality.
Before implementing certain aspects of an extension, we recommend that
you familiarize yourself with examples and their code. A task that you
need to accomplish might be a typical one, and there is a chance that
there is a ready implementation example that will help you speed up
development.
The extension examples can be found on our GitHub
page. You can install them into Plesk by
using the Plesk administrator’s interface.