4 ../../../../external/corefx/src/System.Data.Common/src/System/Data/IColumnMappingCollection.cs
5 ../../../../external/corefx/src/System.Data.Common/src/System/Data/Common/DbColumn.cs
6 ../../../../external/corefx/src/System.Data.Common/src/System/Data/Common/DbDataReaderExtensions.Facade.cs