Fix missing API when running actions

.github/workflows/python.yml

@@ -12,14 +12,21 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
+
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v2
         with:
           python-version: ${{ matrix.python-version }}
+
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
           pip install tox
+
+      - name: Generate API
+        run: |
+          python setup.py generate --api
+
       - name: Run tests
         run: |
           tox