Can you run an XPC service inside a plugin? (e.g. a Print Dialog Extension plugin)

Question

I am creating a Print Dialog Extension (PDE) plugin. This plugin is called and displayed when a user Prints from different apps, e.g. TextEdit, Preview, Xcode, etc. Note that the plugin runs on top of the app that called the Print Plugin (for example, TextEdit).
Inside the plugin, I need to run an XPC service. I need an XPC service since the entitlements on the main app might not be sufficient for my needs, e.g. I need to connect to the network, and TextEdit does not have the required entitlements for network connection.
The problem is, I can't create an XPC connection. The handler always fire with XPC_ERROR_CONNECTION_INVALID.
1.) Is this because the PDE Plugin is not inside the main bundle/main app, e.g. Text Edit?
2.) If yes, how can I still run an XPC service within a PDE Plugin?
3.) If no, then why can't I successfully create an XPC connection?

Answer 1

Back up all data.
Triple-click anywhere in the line below on this page to select it:
/Library/Audio/Plug-Ins/HAL/de.access-music.virus_ti.plugin
Right-click or control-click the highlighted line and select
Services ▹ Reveal in Finder (or just Reveal)
from the contextual menu.* A folder should open with an item selected. Move the selected item to the Trash. You may be prompted for your administrator login password. Restart the computer and empty the Trash.
*If you don't see the contextual menu item, copy the selected text to the Clipboard by pressing the key combination  command-C. In the Finder, select
Go ▹ Go to Folder...
from the menu bar and paste into the box that opens by pressing command-V. You won't see what you pasted because a line break is included. Press return.