public async Task TestPurgeAllFilesAsync()
{
using var client = new CloudFlareClient(Credentials.Credentials.Authentication);
var zonesQueryResult = (await client.GetZonesAsync()).Result.First();
var purgeAllFilesAsyncQueryResult = await client.PurgeAllFilesAsync(zonesQueryResult.Id, true);
Assert.NotNull(purgeAllFilesAsyncQueryResult);
Assert.Empty(purgeAllFilesAsyncQueryResult.Errors);
Assert.True(purgeAllFilesAsyncQueryResult.Success);
}