Introduce `pg.coding` sub-module. #1098

	name: docgen_test

	on:
	pull_request:
	branches:
	- main
	push:
	branches:
	- main

	jobs:
	test-ubuntu:
	name: "documentation generation on ${{ matrix.python-version }} on ${{ matrix.os }}"
	runs-on: "${{ matrix.os }}"
	strategy:
	matrix:
	python-version: ["3.9"]
	os: [ubuntu-latest]
	steps:
	- uses: actions/checkout@v3
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -r docs/requirements.txt
	- name: Print installed dependencies
	run: \|
	pip freeze
	- name: Make Sphinx Docs to HTML (Test)
	run: \|
	cd docs
	bash ./generate_docs.sh html
	# The below step just reports the success or failure of tests as a "commit status".
	# This is needed for copybara integration.
	- name: Report success or failure as github status
	if: always()
	shell: bash
	run: \|
	status="${{ job.status }}"
	lowercase_status=$(echo $status \| tr '[:upper:]' '[:lower:]')
	curl -sS --request POST \
	--url https://api.github.com/repos/${{ github.repository }}/statuses/${{ github.sha }} \
	--header 'authorization: Bearer ${{ secrets.GITHUB_TOKEN }}' \
	--header 'content-type: application/json' \
	--data '{
	"state": "'$lowercase_status'",
	"target_url": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}",
	"description": "'$status'",
	"context": "github-actions/docgen"
	}'

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