/// <summary>
/// Returns a single collection.
/// </summary>
/// <param name="id">collection id</param>
/// <returns></returns>
public async Task <Models.Collection> GetCollectionAsync(int id)
{
IRestRequest restRequest = _requestBuilder.GetCollectionRequest(id);
var response = await _client.ExecuteTaskAsync(restRequest);
return(HandleResponse <CollectionResponse, Models.Collection>(response.StatusCode, response.Content, res => res?.Collection));
}