[Click] Interacting with handlers with userspace Click

[Adam M]

Hi folks,

In the 'Element and Configure Parsing' documentation, it says "Handlers
are access points through which users can interact with elements in a
running Click router, or with the router as a whole. Read and write
handlers behave like files in a file system."

However, this seems like it would only be applicable to kernel-mode
Click, since the userspace Click doesn't create the clickfs file system.

I'm not understanding how the user interacts with the Click handlers
when the router is running in userspace. Could someone please clarify?

Thanks,
Adam