@qualifier must be unique between containers and groups. Used to select which to run. @qualifier must be unique between extensions. Used to select which to run. Property must be unique. You can run tests against multiple containers in the same run. To do this you define them as a group. All containers in the group will be started during the run. @qualifier must be unique between all containers in a group. Used to select which to target. @type must be unique between all protocols in a container. Property must be unique. Property must be unique. Property must be unique. Property must be unique.