[BUILDING ERROR]
OUTPUT: MyPivotGridControl.cs(62,65): error CS0508: 'MyPivotCustomizationFieldsTree.PopulateFields(IEnumerable)': return type must be 'void' to match overridden member 'PivotCustomizationFieldsTreeBase.PopulateFields(IEnumerable)' [R:\Temp\35611a7a-a2e2-41ec-826b-137be3143f3d\tempTestingCS\Q236810\Q236810.csproj]
MyPivotGridControl.cs(47,57): error CS0508: 'MyFieldCustomizationTreeBox.CreateFieldsTree()': return type must be 'PivotCustomizationFieldsTreeBase' to match overridden member 'PivotCustomizationTreeBox.CreateFieldsTree()' [R:\Temp\35611a7a-a2e2-41ec-826b-137be3143f3d\tempTestingCS\Q236810\Q236810.csproj]
MyPivotGridControl.cs(51,54): error CS0115: 'MyFieldCustomizationTreeBox.CreateItemViewInfo(ICustomizationTreeItem)': no suitable method found to override [R:\Temp\35611a7a-a2e2-41ec-826b-137be3143f3d\tempTestingCS\Q236810\Q236810.csproj]
MyPivotGridControl.cs(71,49): error CS0246: The type or namespace name 'PivotCustomizationTreeNode' could not be found (are you missing a using directive or an assembly reference?) [R:\Temp\35611a7a-a2e2-41ec-826b-137be3143f3d\tempTestingCS\Q236810\Q236810.csproj]
MyPivotGridControl.cs(82,28): error CS0246: The type or namespace name 'PivotCustomizationTreeNodeType' could not be found (are you missing a using directive or an assembly reference?) [R:\Temp\35611a7a-a2e2-41ec-826b-137be3143f3d\tempTestingCS\Q236810\Q236810.csproj]
MyPivotGridControl.cs(82,59): error CS0115: 'MyPivotCustomizationTreeNode.DefineNodeType(string[])': no suitable method found to override [R:\Temp\35611a7a-a2e2-41ec-826b-137be3143f3d\tempTestingCS\Q236810\Q236810.csproj]