add example of a decument method to the manual #462

	name: CI

	on:
	push:
	pull_request:
	schedule:
	- cron: "6 20 * * 6"

	jobs:
	code-style:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- name: Set up Ruby
	uses: ruby/setup-ruby@v1
	with:
	ruby-version: "3.2"
	- name: Gems cache
	uses: actions/cache@v3
	with:
	path: ~/gems
	key: gems-3.2-${{ hashFiles('*.gemspec', 'Gemfile') }}
	restore-keys: \|
	gems-3.2-
	- name: Install dependencies
	run: \|
	gem install bundler
	bundle config path ~/gems
	bundle install --jobs 4 --retry 3
	- name: Check code style
	run: bundle exec rake rubocop
	test:
	runs-on: ubuntu-latest
	strategy:
	fail-fast: false
	matrix:
	ruby:
	- "2.6.0"
	- "2.6"
	- "2.7.0"
	- "2.7"
	- "3.0.0"
	- "3.0"
	- "3.1.0"
	- "3.1"
	- "3.2.0"
	- "3.2"
	- "3.3.0"
	- "head"
	- "jruby-9.3"
	- "jruby-9.4"
	steps:
	- uses: actions/checkout@v3
	- name: Set up Ruby
	uses: ruby/setup-ruby@v1
	with:
	ruby-version: ${{ matrix.ruby }}
	- name: Gems cache
	uses: actions/cache@v3
	with:
	path: ~/gems
	key: gems-${{ matrix.ruby }}-${{ hashFiles('*.gemspec', 'Gemfile') }}
	restore-keys: \|
	gems-${{ matrix.ruby }}-
	- name: Install dependencies
	if: ${{ startsWith(matrix.ruby, '2.') }}
	run: \|
	gem install bundler -v 2.4.22
	bundle config path ~/gems
	bundle install --jobs 4 --retry 3
	- name: Install dependencies
	if: ${{ ! startsWith(matrix.ruby, '2.') }}
	run: \|
	gem install bundler
	bundle config path ~/gems
	bundle install --jobs 4 --retry 3
	- name: Run tests
	run: bundle exec rake spec

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