/usr/include/ngs/inl/ is in libngs-sdk-dev 1.3.0-2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/ngs/inl/Alignment.hpp
/usr/include/ngs/inl/AlignmentIterator.hpp
/usr/include/ngs/inl/Fragment.hpp
/usr/include/ngs/inl/FragmentIterator.hpp
/usr/include/ngs/inl/Package.hpp
/usr/include/ngs/inl/Pileup.hpp
/usr/include/ngs/inl/PileupEvent.hpp
/usr/include/ngs/inl/PileupEventIterator.hpp
/usr/include/ngs/inl/PileupIterator.hpp
/usr/include/ngs/inl/Read.hpp
/usr/include/ngs/inl/ReadCollection.hpp
/usr/include/ngs/inl/ReadGroup.hpp
/usr/include/ngs/inl/ReadGroupIterator.hpp
/usr/include/ngs/inl/ReadIterator.hpp
/usr/include/ngs/inl/Reference.hpp
/usr/include/ngs/inl/ReferenceIterator.hpp
/usr/include/ngs/inl/ReferenceSequence.hpp
/usr/include/ngs/inl/Statistics.hpp
/usr/include/ngs/inl/StringRef.hpp