azure-devops/azure/devops/v5_1/work_item_tracking/models.py
azure-devops/azure/devops/v6_0/work/models.py

azure-devops/azure/devops/v5_1/work_item_tracking/work_item_tracking_client.py
azure-devops/azure/devops/v6_0/work/work_client.py