https://github.com/svetvasilev/transmock/blob/04b97b2d517c35e73f0e0cfb872b51ad39ae1aa7/Mockifier/TransMock.Mockifier.Parser/BizTalkBindingsParser.cs#L515 The BTDF allows for Nil send handlers in the PortBindings <SendHandler xsi:nil="true" /> The Mockifier throws an "Null Reference" exception for those