/usr/include/KF5/KFileMetaData/ is in libkf5filemetadata-dev 5.18.0-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/KF5/KFileMetaData/KFileMetaData/
/usr/include/KF5/KFileMetaData/KFileMetaData/ExtractionResult
/usr/include/KF5/KFileMetaData/KFileMetaData/Extractor
/usr/include/KF5/KFileMetaData/KFileMetaData/ExtractorCollection
/usr/include/KF5/KFileMetaData/KFileMetaData/ExtractorPlugin
/usr/include/KF5/KFileMetaData/KFileMetaData/Properties
/usr/include/KF5/KFileMetaData/KFileMetaData/PropertyInfo
/usr/include/KF5/KFileMetaData/KFileMetaData/SimpleExtractionResult
/usr/include/KF5/KFileMetaData/KFileMetaData/TypeInfo
/usr/include/KF5/KFileMetaData/KFileMetaData/Types
/usr/include/KF5/KFileMetaData/KFileMetaData/UserMetaData
/usr/include/KF5/KFileMetaData/kfilemetadata/
/usr/include/KF5/KFileMetaData/kfilemetadata/extractionresult.h
/usr/include/KF5/KFileMetaData/kfilemetadata/extractor.h
/usr/include/KF5/KFileMetaData/kfilemetadata/extractorcollection.h
/usr/include/KF5/KFileMetaData/kfilemetadata/extractorplugin.h
/usr/include/KF5/KFileMetaData/kfilemetadata/kfilemetadata_export.h
/usr/include/KF5/KFileMetaData/kfilemetadata/properties.h
/usr/include/KF5/KFileMetaData/kfilemetadata/propertyinfo.h
/usr/include/KF5/KFileMetaData/kfilemetadata/simpleextractionresult.h
/usr/include/KF5/KFileMetaData/kfilemetadata/typeinfo.h
/usr/include/KF5/KFileMetaData/kfilemetadata/types.h
/usr/include/KF5/KFileMetaData/kfilemetadata/usermetadata.h