/usr/include/xalanc/XalanTransformer/ is in libxalan-c-dev 1.11-5.
This file is owned by root:root, with mode 0o755.
..
/usr/include/xalanc/XalanTransformer/XalanCAPI.h
/usr/include/xalanc/XalanTransformer/XalanCompiledStylesheet.hpp
/usr/include/xalanc/XalanTransformer/XalanCompiledStylesheetDefault.hpp
/usr/include/xalanc/XalanTransformer/XalanDefaultDocumentBuilder.hpp
/usr/include/xalanc/XalanTransformer/XalanDefaultParsedSource.hpp
/usr/include/xalanc/XalanTransformer/XalanDocumentBuilder.hpp
/usr/include/xalanc/XalanTransformer/XalanParsedSource.hpp
/usr/include/xalanc/XalanTransformer/XalanSourceTreeWrapperParsedSource.hpp
/usr/include/xalanc/XalanTransformer/XalanTransformer.hpp
/usr/include/xalanc/XalanTransformer/XalanTransformerDefinitions.hpp
/usr/include/xalanc/XalanTransformer/XalanTransformerOutputStream.hpp
/usr/include/xalanc/XalanTransformer/XalanTransformerProblemListener.hpp
/usr/include/xalanc/XalanTransformer/XercesDOMParsedSource.hpp
/usr/include/xalanc/XalanTransformer/XercesDOMWrapperParsedSource.hpp