/usr/include/KF5/KGAPI/kgapi/tasks/ is in libkf5gapi-dev 5.1.0-2.
This file is owned by root:root, with mode 0o755.
..
/usr/include/KF5/KGAPI/kgapi/tasks/kgapitasks_export.h
/usr/include/KF5/KGAPI/kgapi/tasks/task.h
/usr/include/KF5/KGAPI/kgapi/tasks/taskcreatejob.h
/usr/include/KF5/KGAPI/kgapi/tasks/taskdeletejob.h
/usr/include/KF5/KGAPI/kgapi/tasks/taskfetchjob.h
/usr/include/KF5/KGAPI/kgapi/tasks/tasklist.h
/usr/include/KF5/KGAPI/kgapi/tasks/tasklistcreatejob.h
/usr/include/KF5/KGAPI/kgapi/tasks/tasklistdeletejob.h
/usr/include/KF5/KGAPI/kgapi/tasks/tasklistfetchjob.h
/usr/include/KF5/KGAPI/kgapi/tasks/tasklistmodifyjob.h
/usr/include/KF5/KGAPI/kgapi/tasks/taskmodifyjob.h
/usr/include/KF5/KGAPI/kgapi/tasks/taskmovejob.h