====== Fetch Arrivals (POST) ======
Get arrivals at specific platforms or entire stations. The numeric IDs of platforms or stations are usually used, but unsigned hex string representations can be used if preferred.

[[https://github.com/Minecraft-Transit-Railway/Transport-Simulation-Core/blob/master/buildSrc/src/main/resources/schema/operation/arrivalsRequest.json|Schema Reference]]
===== Example Endpoint =====
  http://localhost:8888/mtr/api/operation/arrivals?dimension=0
===== Example Request Body =====
<code javascript>
{
    "platformIds": [
        -7391405823439797000,
        -4337986715555009500
    ],
    "platformIdsHex": [],
    "stationIds": [],
    "stationIdsHex": [],
    "maxCountPerPlatform": 10,
    "maxCountTotal": 20
}
</code>