in aspnet/Microsoft.Samples.XMLA.HTTP/Tester/Program.cs [125:136]
static async Task<JArray> RunQueryJArray(string query)
{
var resp = await RunQuery(query);
var j = JsonConvert.DeserializeObject(resp);
if (j is JArray ja)
return ja;
JObject jo = (JObject)j;
return jo.Value<JArray>("rows");
}