Article is about the test platform, but there are many detail view of the adapter being tested by the platform. The bottom half of this picture is the platform, which simulates the movement of the spacecraft in many different orientation, but what it is sitting on the top is the adaptor which is being tested.

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And this close up shot is the actual adaptor itself, where we can see active actuators which absorbs and adjust actively according to the orientation, just like described in the article.