WWDC 2019 video shows that there is template for System Extesnion (Network Extension) in Xcode. i don't see any such template.
my xcode version is 11.3.1.
am i missing something here
These are target templates, not project templates, so you have to have a project open. Try this:
Open or create an app project.
Choose File > New > Target.
Select macOS at the top.
Type network into the search box.
Select either Application Extension > Network Extension or System Extension > Network Extension.
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