Calculate route with a passthrough waypoint

The example below is using the same coordinates for origin, destination and via, but is setting passThrough=true for the via waypoint.

As a result, contrary to previous example, the received route response contains only one leg stretching from origin to destination, avoiding splitting into sections at the intermediate waypoint.

curl -X GET \
  'https://router.hereapi.com/v8/routes?transportMode=car&return=polyline,summary,passthrough&origin=52.51375,13.42462&destination=52.52332,13.42800&via=52.52426,13.43000!passThrough=true&apiKey={YOUR_API_KEY}'

{
  "routes": [
    {
      "id": "338a34f2-60c2-4ced-b9c4-074c3c2f8039",
      "sections": [
        {
          "id": "c4052a8e-7a53-4203-8606-b50260ad7b5c",
          "type": "vehicle",
          "departure": {
            "time": "2020-06-29T16:59:53+02:00",
            "place": {
              "type": "place",
              "location": {
                "lat": 52.513748,
                "lng": 13.424624
              },
              "originalLocation": {
                "lat": 52.51375,
                "lng": 13.42462
              }
            }
          },
          "arrival": {
            "time": "2020-06-29T17:04:09+02:00",
            "place": {
              "type": "place",
              "location": {
                "lat": 52.5232227,
                "lng": 13.4280044
              },
              "originalLocation": {
                "lat": 52.5233199,
                "lng": 13.428
              }
            }
          },
          "summary": {
            "duration": 256,
            "length": 1970,
            "baseDuration": 256
          },
          "passthrough": [
            {
              "place": {
                "type": "place",
                "location": {
                  "lat": 52.5242323,
                  "lng": 13.4301462
                },
                "originalLocation": {
                  "lat": 52.52426,
                  "lng": 13.43
                },
                "waypoint": 0
              },
              "offset": 49
            }
          ],
          "polyline": "BGo9llkDg_rzZkF0G8LoQ4NoQgP8QoLgKgyB0tB4XoVoLsJ0K4IwWoQsOsJ8LwHoLoGkS0KkN8GsJ0F8GgF4D4DsE0FwHoLUgK8BkIkDkIgFwHgFwCgFUgF7B4DjDsErEsE_EkD7GoLUgFoB0F8B8Q0FsE8BkmBkSgtBwWkS8GwH8B8GoBosCgKkhBsE0FU0FUgZjD8VgKoGkD4F8CgNwGgKgFkI4DgFoBoGUsEnBsEvC3IkSvHkNvWsiBjN0ZjX8kB_OkXjD4DvC8BvCUjIUT7VnBrvCA7L7BnnCnBnV7BjhBTzoBN_Z",
          "transport": {
            "mode": "car"
          }
        }
      ]
    }
  ]
}

Screenshot

With passThrough option set to true, the router did not introduce a U-turn at waypoint (1) avoiding a change in travel direction, hence resulting in a different route shape (the orange line), as shown in the image below.