/// <summary>
        /// Creates the Resource Reference(s) and adds them to the list of References
        /// </summary>
        /// <param name="resRef">Reference</param>
        /// <param name="orderNum">(Optional) Order Number</param>
        public void AddReference(string resRef, int?orderNum = null)
        {
            ResourceReference r = new ResourceReference(resRef, orderNum);

            AddReference(r);
        }
 /// <summary>
 /// Adds the Resource Reference(s) to the list of References
 /// </summary>
 /// <param name="refer">The Resource Reference</param>
 public void AddReference(ResourceReference refer)
 {
     AddReference(new List <ResourceReference> {
         refer
     });
 }