feature: implement support nullable #41

	# name: Flutter CI

	# on:
	# push:
	# branches: [main]
	# pull_request:
	# branches: [main]

	# jobs:
	# build:
	# runs-on: ubuntu-latest
	# steps:
	# - name: Checkout repository
	# uses: actions/checkout@v3

	# - name: Set up Flutter
	# uses: subosito/flutter-action@v2
	# with:
	# channel: stable

	# - name: Install dependencies
	# run: flutter pub get

	# - name: Run Analyze
	# run: flutter analyze --no-fatal-infos ./lib/*/.dart ./test/*/.dart

	# - name: Check format
	# run: dart format --set-exit-if-changed ./lib ./test

	# - name: Run tests
	# run: flutter test --coverage

	# - name: Upload coverage reports to Codecov
	# uses: codecov/[email protected]
	# with:
	# token: ${{ secrets.CODECOV_TOKEN }}

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