/usr/include/KF5/KIOCore/KIO/ is in kio-dev 5.18.0-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/KF5/KIOCore/KIO/AuthInfo
/usr/include/KF5/KIOCore/KIO/ChmodJob
/usr/include/KF5/KIOCore/KIO/ConnectionServer
/usr/include/KF5/KIOCore/KIO/CopyJob
/usr/include/KF5/KIOCore/KIO/DavJob
/usr/include/KF5/KIOCore/KIO/DeleteJob
/usr/include/KF5/KIOCore/KIO/DesktopExecParser
/usr/include/KF5/KIOCore/KIO/DirectorySizeJob
/usr/include/KF5/KIOCore/KIO/EmptyTrashJob
/usr/include/KF5/KIOCore/KIO/FileCopyJob
/usr/include/KF5/KIOCore/KIO/FileJob
/usr/include/KF5/KIOCore/KIO/FileSystemFreeSpaceJob
/usr/include/KF5/KIOCore/KIO/ForwardingSlaveBase
/usr/include/KF5/KIOCore/KIO/Global
/usr/include/KF5/KIOCore/KIO/HostInfo
/usr/include/KF5/KIOCore/KIO/IdleSlave
/usr/include/KF5/KIOCore/KIO/Job
/usr/include/KF5/KIOCore/KIO/JobTracker
/usr/include/KF5/KIOCore/KIO/JobUiDelegateExtension
/usr/include/KF5/KIOCore/KIO/JobUiDelegateFactory
/usr/include/KF5/KIOCore/KIO/ListJob
/usr/include/KF5/KIOCore/KIO/MetaData
/usr/include/KF5/KIOCore/KIO/MimetypeJob
/usr/include/KF5/KIOCore/KIO/MkdirJob
/usr/include/KF5/KIOCore/KIO/MkpathJob
/usr/include/KF5/KIOCore/KIO/MultiGetJob
/usr/include/KF5/KIOCore/KIO/RestoreJob
/usr/include/KF5/KIOCore/KIO/Scheduler
/usr/include/KF5/KIOCore/KIO/SimpleJob
/usr/include/KF5/KIOCore/KIO/Slave
/usr/include/KF5/KIOCore/KIO/SlaveBase
/usr/include/KF5/KIOCore/KIO/SlaveConfig
/usr/include/KF5/KIOCore/KIO/SlaveInterface
/usr/include/KF5/KIOCore/KIO/SpecialJob
/usr/include/KF5/KIOCore/KIO/StatJob
/usr/include/KF5/KIOCore/KIO/StoredTransferJob
/usr/include/KF5/KIOCore/KIO/TCPSlaveBase
/usr/include/KF5/KIOCore/KIO/TransferJob
/usr/include/KF5/KIOCore/KIO/UDSEntry