public async Task AllocateIdsAsync()
{
string projectId = _fixture.ProjectId;
string namespaceId = _fixture.NamespaceId;
// Snippet: AllocateIdsAsync(*)
DatastoreDb db = DatastoreDb.Create(projectId, namespaceId);
KeyFactory keyFactory = db.CreateKeyFactory("message");
IReadOnlyList <Key> keys = await db.AllocateIdsAsync(keyFactory.CreateIncompleteKey(), keyFactory.CreateIncompleteKey());
// End snippet
Assert.Equal(2, keys.Count);
Assert.NotEqual(keys[0], keys[1]);
}