/// <summary>
/// Get content items for course
/// </summary>
/// <param name="courseId"></param>
/// <returns></returns>
public async Task <List <ContentItem> > GetContentItemsForCourse(long courseId)
{
var results = await _contentItemRepository.GetContentItemsForCourse(courseId);
return(results.Select(_mapper.Map <ContentItem>).ToList());
}