diff --git a/ClosedXML/ClosedXML/ClosedXML/Excel/Ranges/IXLRangeBase.cs b/ClosedXML/ClosedXML/ClosedXML/Excel/Ranges/IXLRangeBase.cs
index f22eec4..9d40111 100644
--- a/ClosedXML/ClosedXML/ClosedXML/Excel/Ranges/IXLRangeBase.cs
+++ b/ClosedXML/ClosedXML/ClosedXML/Excel/Ranges/IXLRangeBase.cs
@@ -231,8 +231,8 @@
         Boolean IsEmpty();
         Boolean IsEmpty(Boolean includeFormats);
 
-        IXLPivotTable CreatePivotTable(IXLCell targetCell);
-        IXLPivotTable CreatePivotTable(IXLCell targetCell, String name);
+        //IXLPivotTable CreatePivotTable(IXLCell targetCell);
+        //IXLPivotTable CreatePivotTable(IXLCell targetCell, String name);
 
         //IXLChart CreateChart(Int32 firstRow, Int32 firstColumn, Int32 lastRow, Int32 lastColumn);
 
diff --git a/ClosedXML/ClosedXML/ClosedXML/Excel/XLWorkbook.cs b/ClosedXML/ClosedXML/ClosedXML/Excel/XLWorkbook.cs
index 52b3e3e..ec4f593 100644
--- a/ClosedXML/ClosedXML/ClosedXML/Excel/XLWorkbook.cs
+++ b/ClosedXML/ClosedXML/ClosedXML/Excel/XLWorkbook.cs
@@ -664,5 +664,10 @@
         {
             Worksheets.Add(dataSet);
         }
+
+        public void AddWorksheet(IXLWorksheet worksheet)
+        {
+            worksheet.CopyTo(this, worksheet.Name);
+        }
     }
 }
\ No newline at end of file