/usr/include/casacore/lattices/LRegions/ is in casacore-dev 2.2.0-2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/casacore/lattices/LRegions/FITSMask.h
/usr/include/casacore/lattices/LRegions/LCBox.h
/usr/include/casacore/lattices/LRegions/LCComplement.h
/usr/include/casacore/lattices/LRegions/LCConcatenation.h
/usr/include/casacore/lattices/LRegions/LCDifference.h
/usr/include/casacore/lattices/LRegions/LCEllipsoid.h
/usr/include/casacore/lattices/LRegions/LCExtension.h
/usr/include/casacore/lattices/LRegions/LCHDF5Mask.h
/usr/include/casacore/lattices/LRegions/LCIntersection.h
/usr/include/casacore/lattices/LRegions/LCLELMask.h
/usr/include/casacore/lattices/LRegions/LCMask.h
/usr/include/casacore/lattices/LRegions/LCPagedMask.h
/usr/include/casacore/lattices/LRegions/LCPixelSet.h
/usr/include/casacore/lattices/LRegions/LCPolygon.h
/usr/include/casacore/lattices/LRegions/LCRegion.h
/usr/include/casacore/lattices/LRegions/LCRegionFixed.h
/usr/include/casacore/lattices/LRegions/LCRegionMulti.h
/usr/include/casacore/lattices/LRegions/LCRegionSingle.h
/usr/include/casacore/lattices/LRegions/LCSlicer.h
/usr/include/casacore/lattices/LRegions/LCStretch.h
/usr/include/casacore/lattices/LRegions/LCUnion.h
/usr/include/casacore/lattices/LRegions/LattRegionHolder.h
/usr/include/casacore/lattices/LRegions/LatticeRegion.h
/usr/include/casacore/lattices/LRegions/RegionType.h