add OrElse method #40

	name: mod-verify

	env:
	GO_VERSION: "1.20"
	on:
	pull_request:
	push:
	branches: [main]

	permissions:
	contents: read

	jobs:
	mod-verify:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3

	- name: Set up Go
	uses: actions/setup-go@v4
	with:
	go-version: ${{ env.GO_VERSION }}

	- name: Cache Go modules
	uses: actions/cache@v3
	with:
	path: \|
	~/.cache/go-build
	~/go/pkg/mod
	key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
	restore-keys: \|
	${{ runner.os }}-go-

	- name: Verify dependencies
	run: go mod verify

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