document FnType and refactor FnType::self_arg #249

	name: CI Cache Cleanup
	on:
	pull_request_target:
	types:
	- closed

	jobs:
	cleanup:
	runs-on: ubuntu-latest
	permissions:
	actions: write
	steps:
	- name: Cleanup
	run: \|
	gh extension install actions/gh-actions-cache

	echo "Fetching list of cache key"
	cacheKeysForPR=$(gh actions-cache list -R $REPO -B $BRANCH -L 100 \| cut -f 1 )

	## Setting this to not fail the workflow while deleting cache keys.
	set +e
	echo "Deleting caches..."
	for cacheKey in $cacheKeysForPR
	do
	gh actions-cache delete -R $REPO -B $BRANCH --confirm -- $cacheKey
	done
	echo "Done"
	env:
	GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	REPO: ${{ github.repository }}
	BRANCH: refs/pull/${{ github.event.pull_request.number }}/merge

Provide feedback