EF 4.1 Code-First: generate model

private void WriteEdm()
{
    var settings = new XmlWriterSettings();
    settings.Indent = true;

    using (var ctx = new WebEntities())
    {
        using (var writer = XmlWriter.Create(Server.MapPath(@"Model.edmx"), settings))
        {
            EdmxWriter.WriteEdmx(ctx, writer);
        }
    }
}