/// <summary>
 /// Constructor.
 /// </summary>
 /// <param name="smartsheet"> the SmartsheetImpl </param>
 /// <exception cref="InvalidOperationException">if any argument is null</exception>
 public FolderResourcesImpl(SmartsheetImpl smartsheet)
     : base(smartsheet)
 {
     this.sheets = new FolderSheetResourcesImpl(smartsheet);
 }
 /// <summary>
 /// Constructor.
 /// </summary>
 /// <param name="smartsheet"> the SmartsheetImpl </param>
 /// <exception cref="IllegalArgumentException">if any argument is null</exception>
 public FolderResourcesImpl(SmartsheetImpl smartsheet)
     : base(smartsheet)
 {
     this.sheets = new FolderSheetResourcesImpl(smartsheet);
 }