Adding items to an EPiServer Project

AddItemsToProject.cs

/// <summary>
/// Add items to a project 
/// </summary>
/// <param name="repo">The ProjectRepository instance</param>
/// <param name="project">The project to save the items against</param>
/// <param name="contentReferences">A list of ContentReferences to add to the project. *Note!* the item to add should be the draft version number, not the current published version number</param>
/// <returns>A list of the saved project items</returns>
public IList<ProjectItem> AddItemsToProject(ProjectRepository repo, Project project,
    IList<ContentReference> contentReferences)
{
    // Set up a list of Project Items to add.        
    var projectItems = new List<ProjectItem>();
    contentReferences.ForEach(x => projectItems.Add(
        new ProjectItem()
        {
            ContentLink = x,
            ProjectID = project.ID,
            Category = "content",
            Language = new CultureInfo("en") // Ensure correct language is selected based on contentReference
        }));

    //Save the items to the project
    repo.SaveItems(projectItems);

    return projectItems;
}