Add get_max_pk to operation class #45

	name: Linters

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

	jobs:
	flake8_py3:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v2
	- name: Set up Python
	uses: actions/setup-python@v2
	with:
	python-version: 3.11
	- run: python -m pip install flake8
	- name: flake8
	uses: liskin/gh-problem-matcher-wrap@v1
	with:
	linters: flake8
	run: flake8

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